Merge branch 'ml/maint-grep-doc'

* ml/maint-grep-doc:
grep docs: document --no-index option
grep docs: --cached and <tree>... are incompatible
grep docs: use AsciiDoc literals consistently
grep docs: pluralize "Example" section

diff --cc Documentation/git-grep.txt
index 6305f6d82a52d7d3b9e0aac2b2712a4e91931666,ee506e67f09034591b4cd0215f72f61ff607d128..4b32322a67d9f3de8b555d3d9d03e7ddab14e0a7
--- 1/Documentation/git-grep.txt
--- 2/Documentation/git-grep.txt
+++ b/Documentation/git-grep.txt
@@@ -18,10 -17,11 +17,11 @@@ SYNOPSI
           [-z | --null]
           [-c | --count] [--all-match] [-q | --quiet]
           [--max-depth <depth>]
 -         [--color | --no-color]
 +         [--color[=<when>] | --no-color]
           [-A <post-context>] [-B <pre-context>] [-C <context>]
           [-f <file>] [-e] <pattern>
-          [--and|--or|--not|(|)|-e <pattern>...] [<tree>...]
+          [--and|--or|--not|(|)|-e <pattern>...]
+          [--cached | --no-index | <tree>...]
           [--] [<pathspec>...]
  
  DESCRIPTION