🔧 Fix typo in newline.py module docstring (#407)

Fix a double-letter typo in the module docstring of
`markdown_it/rules_inline/newline.py`.

`Proceess` → `Process`

Found with codespell.

Co-authored-by: maxtaran2010 <ocotifuzo727@gmail.com>

Author: maxtaran2010

markdown_it/rules_inline/newline.py

@@ -1,4 +1,4 @@
-"""Proceess '\n'."""
+"""Process '\n'."""
 
 from ..common.utils import charStrAt, isStrSpace
 from .state_inline import StateInline