git-config.1: fix description of --regexp in synopsis

The synopsis says --regexp=<regexp> but the --regexp option is a
Boolean that says "the name given is not literal, but a pattern to
match the name".

Signed-off-by: Junio C Hamano <[email protected]>

Author: gitster

Documentation/git-config.txt

@@ -10,7 +10,7 @@ SYNOPSIS
 --------
 [verse]
 'git config list' [<file-option>] [<display-option>] [--includes]
-'git config get' [<file-option>] [<display-option>] [--includes] [--all] [--regexp=<regexp>] [--value=<value>] [--fixed-value] [--default=<default>] <name>
+'git config get' [<file-option>] [<display-option>] [--includes] [--all] [--regexp] [--value=<value>] [--fixed-value] [--default=<default>] <name>
 'git config set' [<file-option>] [--type=<type>] [--all] [--value=<value>] [--fixed-value] <name> <value>
 'git config unset' [<file-option>] [--all] [--value=<value>] [--fixed-value] <name> <value>
 'git config rename-section' [<file-option>] <old-name> <new-name>

builtin/config.c

@@ -17,7 +17,7 @@
 
 static const char *const builtin_config_usage[] = {
 	N_("git config list [<file-option>] [<display-option>] [--includes]"),
-	N_("git config get [<file-option>] [<display-option>] [--includes] [--all] [--regexp=<regexp>] [--value=<value>] [--fixed-value] [--default=<default>] <name>"),
+	N_("git config get [<file-option>] [<display-option>] [--includes] [--all] [--regexp] [--value=<value>] [--fixed-value] [--default=<default>] <name>"),
 	N_("git config set [<file-option>] [--type=<type>] [--all] [--value=<value>] [--fixed-value] <name> <value>"),
 	N_("git config unset [<file-option>] [--all] [--value=<value>] [--fixed-value] <name> <value>"),
 	N_("git config rename-section [<file-option>] <old-name> <new-name>"),