Fix indentation of latest TIL

python/dedent-common-whitespace-from-multiline-string.md

@@ -11,7 +11,7 @@ equivalent to that in Python is
 [`textwrap.dedent`](https://docs.python.org/3/library/textwrap.html#textwrap.dedent).
 
 > Remove any common leading whitespace from every line in text.
-> 
+>
 > This can be used to make triple-quoted strings line up with the left edge of
 > the display, while still presenting them in the source code in indented form.
 
@@ -23,18 +23,18 @@ def test_base_help_message():
 
     help_result = runner.invoke(cli, ["--help"])
     output = textwrap.dedent("""\
-    Usage: vmt [OPTIONS] COMMAND [ARGS]...
+        Usage: vmt [OPTIONS] COMMAND [ARGS]...
 
-    Options:
+        Options:
-      -v, --verbose  See extra output when running commands
+          -v, --verbose  See extra output when running commands
-      --help         Show this message and exit.
+          --help         Show this message and exit.
 
-    Commands:
+        Commands:
-      cancel
+          cancel
-      log
+          log
-      start
+          start
-      status
+          status
-      stop
+          stop
     """)
     assert output in help_result.output
 ```