Twenty Eleven to Twenty Fourteen: add PHPDoc blocks for footer action hooks

[pmbaldha]

Footer action hooks such as twentyfourteen_credits lack a PHPDoc block.

• ​twentyfourteen_credits
• ​twentythirteen_credits
• ​twentytwelve_credits
• ​twentyeleven_credits

Trac ticket: https://core.trac.wordpress.org/ticket/63648

[sabernhardt]

#63649 was marked as a duplicate.

[sabernhardt]

#63650 was marked as a duplicate.

[sabernhardt]

#63651 was marked as a duplicate.

[sabernhardt]

Pull requests ​9172, ​9173, ​9174 and ​9175 follow the documentation example in Twenty Ten. However, that theme does not include a privacy link between the action and the credits.

I think ​Twenty Fifteen has a better example, both for the description and indentation.

[pmbaldha]

I have updated the attached PR by adding PHPDoc block for Twenty Eleven to Twenty Thirteen credits action hooks.

[SergeyBiryukov]

In 60738:

Twenty Eleven: Document the twentyeleven_credits action hook.

Follow-up to [17954], [25627], [29998].

Props pmbaldha, sabernhardt.
See #63648.

[SergeyBiryukov]

In 60739:

Twenty Twelve: Document the twentytwelve_credits action hook.

Follow-up to [21261], [60738].

Props pmbaldha, sabernhardt.
See #63648.

[SergeyBiryukov]

In 60740:

Twenty Thirteen: Document the twentythirteen_credits action hook.

Follow-up to [23452], [60738], [60739].

Props pmbaldha, sabernhardt.
See #63648.

[SergeyBiryukov]

In 60742:

Twenty Fourteen: Document the twentyfourteen_credits action hook.

Follow-up to [24832], [60738], [60739], [60740].

Props pmbaldha, sabernhardt.
See #63648.

Thanks for the PR! Merged in r60738, r60739, r60740, and r60742.