More minor fixes to C API docs (GH-31714)


* init_config: wording fixes

* bytearray: remove XXX, there is a good link to the buffer docs

* bytes, call, exceptions: minor wording fixes
(cherry picked from commit 677a87946630c5fbd9998969669b4dd4f4b32545)

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
5 files changed