exclude BasicTexTemplate from documentation - local use only

Author: Aron Fischer

manim/utils/tex_templates.py

@@ -12,7 +12,7 @@
 
 
 def BasicTexTemplate():
-    """ Returns a simple Tex Template with only basic AMS packages"""
+    # Returns a simple Tex Template with only basic AMS packages
     preamble = r"""
 \usepackage[english]{babel}
 \usepackage{amsmath}