Fix documentation and prepare for extension w.r.t. new rate limiter types
* improved readability of the "uploadpack" configuration options'
description; streamlined the corresponding anchor tags
* corrected some "typos", e.g. added missing <code> quotes in config.md,
correcting or harmonizing the visual appearance
* in preparation for an introduction of a new rate limit type,
a couple of general statements have been moved around in the text,
allowing for extensibility.
* consistently fixed html syntax; disentangled html and md syntax
that confuses some development tools for markdown documents and
impacts readability
* added a forgotten capability in the list in about.md
Change-Id: Ia369efad3b45a7f63513dc5fad2119316038be93
3 files changed
