Fix documentation typos and formatting (#352)

Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com>

Author: DimitriPapadopoulos

README.rst

@@ -1,5 +1,5 @@
 Readme Renderer
-===============
+================
 
 .. image:: https://badge.fury.io/py/readme-renderer.svg
     :target: https://badge.fury.io/py/readme-renderer
@@ -33,4 +33,4 @@ chat rooms, and mailing lists is expected to follow the `PSF Code of Conduct`_.
 .. _twine check: https://packaging.python.org/guides/making-a-pypi-friendly-readme#validating-restructuredtext-markup
 .. _PSF Code of Conduct: https://github.com/pypa/.github/blob/main/CODE_OF_CONDUCT.md
 
-Copyright © 2014, [The Python Packaging Authority].
+Copyright © 2014, The Python Packaging Authority.

readme_renderer/markdown.py

@@ -93,7 +93,7 @@ def render(
 def _highlight(html: str) -> str:
     """Syntax-highlights HTML-rendered Markdown.
 
-    Plucks sections to highlight that conform the the GitHub fenced code info
+    Plucks sections to highlight that conform to the GitHub fenced code info
     string as defined at https://github.github.com/gfm/#info-string.
 
     Args:

readme_renderer/rst.py

@@ -76,7 +76,7 @@ def emptytag(
 
     # Output math blocks as LaTeX that can be interpreted by MathJax for
     # a prettier display of Math formulas.
-    # Pass a dummy path to supress docutils warning and emit HTML.
+    # Pass a dummy path to suppress docutils warning and emit HTML.
     "math_output": "MathJax /dummy.js",
 
     # Disable raw html as enabling it is a security risk, we do not want