Revert "doc: Removed use of gendered pronouns"

@isaacs may have his commit bit but that does not mean he is at liberty
to land patches at will.  All patches have to be signed off by either
me or Bert.  Isaac, consider yourself chided.

This reverts commit 47d98b64c45db8335bf7e065351e385cae32323d.
Merge remote-tracking branch 'origin/v0.10'