shelve: improve help text for --patch and --stat
It's not currently obvious why "hg shelve -p" fails, since -p doesn't take an argument.
Differential Revision: https://phab.mercurial-scm.org/D3949
BasedOnStyle: LLVM
IndentWidth: 8
UseTab: ForIndentation
BreakBeforeBraces: Linux
AllowShortIfStatementsOnASingleLine: false
IndentCaseLabels: false
AllowShortBlocksOnASingleLine: false
AllowShortFunctionsOnASingleLine: false
IncludeCategories:
- Regex: '^<'
Priority: 1
- Regex: '^"'
Priority: 2