global: make some docstrings raw strings
Python 3.8 emits a SyntaxWarning when a str/bytes contains invalid
\ escapes. Various docstrings in our code base contain invalid
\ escapes.
This commit turns those docstrings into raw strings.
Differential Revision: https://phab.mercurial-scm.org/D5816
BasedOnStyle: LLVM
IndentWidth: 8
UseTab: ForIndentation
BreakBeforeBraces: Linux
AllowShortIfStatementsOnASingleLine: false
IndentCaseLabels: false
AllowShortBlocksOnASingleLine: false
AllowShortFunctionsOnASingleLine: false
IncludeCategories:
- Regex: '^<'
Priority: 1
- Regex: '^"'
Priority: 2