Also improve the description a bit and explain at a high level
how this code is used, and which classes back those entry points.
Change-Id: Ia69531858e714d0b43a29a7d5b6dcc5c7edd8240
Follow up to I89f3398cffa771afcd5a33cfd11eb8510af3e7f7: this patch
was intended to mirror a new method added to OutputPage in
Ia58910164baaca608cea3b24333b7d13ed773339 but the bikeshed was painted
a slightly different color before the OutputPage patch was merged, and
somehow this patch wasn't changed to match. The `addWikiTextInterface`
name was never included in a released MW version, so we don't need to
deprecate it, just fix it.
Change-Id: I636cb0ea0f9631c4c5e2bc118f479aec76d2b231
This change parallels the new method added to OutputPage in
Ia58910164baaca608cea3b24333b7d13ed773339 and ensures that the
content added is always tidied. We leave the old alias in
place for now in accordance with our deprecation policy.
Change-Id: I89f3398cffa771afcd5a33cfd11eb8510af3e7f7
