Merge branch 'ah/usage-strings' into maint

A few usage string updates.

* ah/usage-strings:
  blame, log: format usage strings similarly to those in documentation

builtin/blame.c

@@ -28,7 +28,7 @@
 #include "line-log.h"
 #include "dir.h"
 
-static char blame_usage[] = N_("git blame [<options>] [<rev-opts>] [<rev>] [--] file");
+static char blame_usage[] = N_("git blame [<options>] [<rev-opts>] [<rev>] [--] <file>");
 
 static const char *blame_opt_usage[] = {
 	blame_usage,

builtin/log.c

@@ -38,7 +38,7 @@ static const char *fmt_patch_subject_prefix = "PATCH";
 static const char *fmt_pretty;
 
 static const char * const builtin_log_usage[] = {
-	N_("git log [<options>] [<revision range>] [[--] <path>...]"),
+	N_("git log [<options>] [<revision-range>] [[--] <path>...]"),
 	N_("git show [<options>] <object>..."),
 	NULL
 };