doc/for-each-ref: explicitly specify option names

For count, sort and format, only the argument names were listed under
OPTIONS, not the option names.

Add the option names to make it clear the options exist

Signed-off-by: Kevin Daudt <me@ikke.info>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/git-for-each-ref.txt

@@ -26,19 +26,25 @@ host language allowing their direct evaluation in that language.
 
 OPTIONS
 -------
-<count>::
+<pattern>...::
+	If one or more patterns are given, only refs are shown that
+	match against at least one pattern, either using fnmatch(3) or
+	literally, in the latter case matching completely or from the
+	beginning up to a slash.
+
+--count=<count>::
 	By default the command shows all refs that match
 	`<pattern>`.  This option makes it stop after showing
 	that many refs.
 
-<key>::
+--sort=<key>::
 	A field name to sort on.  Prefix `-` to sort in
 	descending order of the value.  When unspecified,
 	`refname` is used.  You may use the --sort=<key> option
 	multiple times, in which case the last key becomes the primary
 	key.
 
-<format>::
+--format=<format>::
 	A string that interpolates `%(fieldname)` from a ref being shown
 	and the object it points at.  If `fieldname`
 	is prefixed with an asterisk (`*`) and the ref points
@@ -51,12 +57,6 @@ OPTIONS
 	`xx`; for example `%00` interpolates to `\0` (NUL),
 	`%09` to `\t` (TAB) and `%0a` to `\n` (LF).
 
-<pattern>...::
-	If one or more patterns are given, only refs are shown that
-	match against at least one pattern, either using fnmatch(3) or
-	literally, in the latter case matching completely or from the
-	beginning up to a slash.
-
 --shell::
 --perl::
 --python::