_content/doc: fix a link in code.html
_content/doc: fix a link in code.html

Change the anchor to point to the "Remote import paths" section.
Previously the anchor pointed to the "Relative import paths" section,
even though the paragraph was about "Remote import paths."

Change-Id: I376d5f99149041edcc4d6370522bdfbfe80eceb4
Reviewed-on: https://go-review.googlesource.com/c/website/+/375554
Run-TryBot: Jean de Klerk <605b93664484fed1e671a07bff68da39e73d0174@google.com>
TryBot-Result: Gopher Robot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: Jamal Carvalho <19dd88ea049b99d7eb75a23cc7da743ca525bca4@google.com>
Reviewed-by: Dmitri Shuralyov <d181b7fea0ec87c86ba5a890ab716db52498e3ba@google.com>
Trust: Dmitri Shuralyov <d181b7fea0ec87c86ba5a890ab716db52498e3ba@google.com>

golang/website,golang/website,golang/website,golang/website,golang/website,golang/website,golang/website