FIX: Apply codespell suggestions

Author: effigies

doc/source/gitwash/development_workflow.rst

@@ -334,7 +334,7 @@ Rewriting commit history
 
    Do this only for your own feature branches.
 
-There's an embarassing typo in a commit you made? Or perhaps the you
+There's an embarrassing typo in a commit you made? Or perhaps the you
 made several false starts you would like the posterity not to see.
 
 This can be done via *interactive rebasing*.

nibabel/info.py

@@ -77,7 +77,7 @@
     pip install nibabel[test]
     pytest --pyargs nibabel
 
-For more inforation, consult the `developer guidelines`_.
+For more information, consult the `developer guidelines`_.
 
 .. _tox: https://tox.wiki
 .. _pytest: https://docs.pytest.org