diff --git a/404.html b/404.html
index 0562f54..848a37c 100644
--- a/404.html
+++ b/404.html
@@ -9,7 +9,7 @@
-
+
diff --git a/big_data/architecture/index.html b/big_data/architecture/index.html
index e898950..6318606 100644
--- a/big_data/architecture/index.html
+++ b/big_data/architecture/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/big_data/evolution/index.html b/big_data/evolution/index.html
index 90e6aef..816212f 100644
--- a/big_data/evolution/index.html
+++ b/big_data/evolution/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/big_data/intro/index.html b/big_data/intro/index.html
index 0cb55e7..15f7129 100644
--- a/big_data/intro/index.html
+++ b/big_data/intro/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/big_data/overview/index.html b/big_data/overview/index.html
index ba0a40b..9780438 100644
--- a/big_data/overview/index.html
+++ b/big_data/overview/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/big_data/tasks/index.html b/big_data/tasks/index.html
index feba31b..c6f97a1 100644
--- a/big_data/tasks/index.html
+++ b/big_data/tasks/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/big_data/usage/index.html b/big_data/usage/index.html
index 50409f4..9552cdc 100644
--- a/big_data/usage/index.html
+++ b/big_data/usage/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/git/branches/index.html b/git/branches/index.html
index ab0b86a..68cfe98 100644
--- a/git/branches/index.html
+++ b/git/branches/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/git/git-basics/index.html b/git/git-basics/index.html
index 333ee44..117ec5e 100644
--- a/git/git-basics/index.html
+++ b/git/git-basics/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/git/github-hooks/index.html b/git/github-hooks/index.html
index 83fa82f..1146670 100644
--- a/git/github-hooks/index.html
+++ b/git/github-hooks/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/index.html b/index.html
index 66f4b29..3b94a3e 100644
--- a/index.html
+++ b/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/linux_networking/dns/index.html b/linux_networking/dns/index.html
index 3e22f44..0b5b8db 100644
--- a/linux_networking/dns/index.html
+++ b/linux_networking/dns/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/linux_networking/http/index.html b/linux_networking/http/index.html
index a3334d9..0c7a038 100644
--- a/linux_networking/http/index.html
+++ b/linux_networking/http/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/linux_networking/intro/index.html b/linux_networking/intro/index.html
index c3033f4..0bbcd82 100644
--- a/linux_networking/intro/index.html
+++ b/linux_networking/intro/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/linux_networking/ipr/index.html b/linux_networking/ipr/index.html
index 8b6ee16..493eedf 100644
--- a/linux_networking/ipr/index.html
+++ b/linux_networking/ipr/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/linux_networking/tcp/index.html b/linux_networking/tcp/index.html
index ad21638..1141a71 100644
--- a/linux_networking/tcp/index.html
+++ b/linux_networking/tcp/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/linux_networking/udp/index.html b/linux_networking/udp/index.html
index 86232ac..9ce039b 100644
--- a/linux_networking/udp/index.html
+++ b/linux_networking/udp/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/python_web/intro/index.html b/python_web/intro/index.html
index aed22ee..8872c45 100644
--- a/python_web/intro/index.html
+++ b/python_web/intro/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/python_web/python-concepts/index.html b/python_web/python-concepts/index.html
index ede3d9e..e74949b 100644
--- a/python_web/python-concepts/index.html
+++ b/python_web/python-concepts/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/python_web/python-web-flask/index.html b/python_web/python-web-flask/index.html
index 2f51ca3..ba411eb 100644
--- a/python_web/python-web-flask/index.html
+++ b/python_web/python-web-flask/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/python_web/sre-conclusion/index.html b/python_web/sre-conclusion/index.html
index 05829c0..9709bcb 100644
--- a/python_web/sre-conclusion/index.html
+++ b/python_web/sre-conclusion/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/python_web/url-shorten-app/index.html b/python_web/url-shorten-app/index.html
index 4a82595..ab6617f 100644
--- a/python_web/url-shorten-app/index.html
+++ b/python_web/url-shorten-app/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/security/fundamentals/index.html b/security/fundamentals/index.html
index 1975188..b284890 100644
--- a/security/fundamentals/index.html
+++ b/security/fundamentals/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/security/intro/index.html b/security/intro/index.html
index aae31cc..b787e48 100644
--- a/security/intro/index.html
+++ b/security/intro/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/security/network_security/index.html b/security/network_security/index.html
index 1eb9e63..32b825f 100644
--- a/security/network_security/index.html
+++ b/security/network_security/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/security/threats_attacks_defences/index.html b/security/threats_attacks_defences/index.html
index f4bac6c..338cd15 100644
--- a/security/threats_attacks_defences/index.html
+++ b/security/threats_attacks_defences/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/security/writing_secure_code/index.html b/security/writing_secure_code/index.html
index 1f4fff5..51ed02d 100644
--- a/security/writing_secure_code/index.html
+++ b/security/writing_secure_code/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/sitemap.xml.gz b/sitemap.xml.gz
index 26c584c..d3087f4 100644
Binary files a/sitemap.xml.gz and b/sitemap.xml.gz differ
diff --git a/systems_design/availability/index.html b/systems_design/availability/index.html
index f13e7a7..ef5a4ef 100644
--- a/systems_design/availability/index.html
+++ b/systems_design/availability/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/systems_design/conclusion/index.html b/systems_design/conclusion/index.html
index d1e16d8..febee2f 100644
--- a/systems_design/conclusion/index.html
+++ b/systems_design/conclusion/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/systems_design/fault-tolerance/index.html b/systems_design/fault-tolerance/index.html
index 83a228f..207b935 100644
--- a/systems_design/fault-tolerance/index.html
+++ b/systems_design/fault-tolerance/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/systems_design/intro/index.html b/systems_design/intro/index.html
index b653910..22b54c0 100644
--- a/systems_design/intro/index.html
+++ b/systems_design/intro/index.html
@@ -9,7 +9,7 @@
-
+
diff --git a/systems_design/scalability/index.html b/systems_design/scalability/index.html
index 856fbe3..da0a1e2 100644
--- a/systems_design/scalability/index.html
+++ b/systems_design/scalability/index.html
@@ -9,7 +9,7 @@
-
+