content: remove gender-specific pronouns for the gopher
content: remove gender-specific pronouns for the gopher

Gopher has no gender, but masculine pronouns are used throught
the article. Small tweaks allow us to make the gopher gender-neutral
in the scope of this blog post.

Change-Id: I18c326c01ecf9fc32a62ef1f54ad5a70265ff832
Reviewed-on: https://go-review.googlesource.com/12448
Reviewed-by: Andrew Gerrand <395a7d33bec8475c9b83b7d440f141bcbd994aa5@golang.org>

gorakhargosh/blog,jeffreyliguori/blog,gorakhargosh/blog