Fixing some docs building warnings

Author: MysaaJava

docs/source/installation/linux.rst

@@ -11,7 +11,7 @@ The two necessary dependencies are cairo and ffmpeg.  LaTeX is strongly
 recommended, as it is necessary to have access to the ``Tex`` and ``MathTex`` classes.
 
 Ubuntu/Mint/Debian
-*************
+******************
 
 Before installing anything, make sure that your system is up to date.
 
@@ -50,7 +50,7 @@ If you don't have python3-pip installed, install it:
 
 
 Fedora/CentOS/RHEL
-*************
+******************
 
 To install cairo:
 

docs/source/installation/troubleshooting.rst

@@ -56,7 +56,7 @@ As soon as you have found the library, try (on Mac OS or Linux)
 
 or (on Windows)  
 
-.. code-block:: cmd
+.. code-block:: bat
 
   set LIBS=<path to your library including the file name>
   dvisvgm -l

manim/scene/scene.py

@@ -781,8 +781,8 @@ def play_internal(self, *args, **kwargs):
 
         Parameters
         ----------
-        *args : Animation or mobject with mobject method and params
-        **kwargs : named parameters affecting what was passed in *args e.g run_time, lag_ratio etc.
+        \*args : Animation or mobject with mobject method and params
+        \*\*kwargs : named parameters affecting what was passed in \*args e.g run_time, lag_ratio etc.
         """
         if len(args) == 0:
             warnings.warn("Called Scene.play with no animations")