Fix typos

Author: zhPavel

docs/changelog/changelog_body.rst

@@ -11,7 +11,6 @@
 Features
 --------
 
-
 - Completely redesigned error rendering system.
   All errors related to loader, dumper, and converter generation now utilize a new compact and intuitive display format.
   Error messages have also been substantially improved for clarity.

docs/why-not-pydantic.rst

@@ -280,8 +280,8 @@ The only way to get around this problem is to try to use the ``context`` paramet
 and write dispatch logic inside the validators.
 
 
-Pydantic written in Rust, so Pydantic is fast?
---------------------------------------------------
+Pydantic is written in Rust, so Pydantic is fast?
+------------------------------------------------------
 
 As benchmarks show, this is far from true.