Doc: Minor formatting.

Carreau · Carreau · commit 256dec3beae0 · 2021-01-27T21:51:39.000-08:00
Single colon make the full block to be seen as a comment for sphinx.

And make proper underline length.
diff --git a/lib/matplotlib/__init__.py b/lib/matplotlib/__init__.py
@@ -243,7 +243,7 @@ def _get_executable_info(name):
     """
     Get the version of some executable that Matplotlib optionally depends on.
 
-    .. warning:
+    .. warning::
        The list of executables that this function supports is set according to
        Matplotlib's internal needs, and may change without notice.
 
diff --git a/lib/matplotlib/mlab.py b/lib/matplotlib/mlab.py
@@ -5,7 +5,7 @@
 spectral computations.
 
 Spectral functions
--------------------
+------------------
 
 `cohere`
     Coherence (normalized cross spectral density)
