doc: correct the note of code host API rate limiting (!32870) · Merge requests · Administrator / sourcegraph · GitLab

Administrator requested to merge unknwon-patch-1 into main Mar 22, 2022

Created by: unknwon

The current statement is outdated and misaligned with where the links are pointing to, e.g. https://github.com/sourcegraph/sourcegraph/blob/045a533bcbc18ab9f1e3e10b213ed6304c26b64b/doc/admin/external_service/github.md?plain=1#L77

Test plan

Pure doc update.