CLEANUP: mux-h1: Fix comments and error messages for global options

Wrong name was used in comments and error messages for
"h1-header-case-adjust" and "h1-headers-case-adjust-file" global options.
diff --git a/src/mux_h1.c b/src/mux_h1.c
index 5085e11..f923f33 100644
--- a/src/mux_h1.c
+++ b/src/mux_h1.c
@@ -4069,7 +4069,7 @@
 
 	file = fopen(hdrs_map.name, "r");
 	if (!file) {
-		ha_alert("h1-outgoing-headers-case-adjust-file '%s': failed to open file.\n",
+		ha_alert("h1-headers-case-adjust-file '%s': failed to open file.\n",
 			 hdrs_map.name);
                 err_code |= ERR_ALERT | ERR_FATAL;
 		goto end;
@@ -4118,14 +4118,14 @@
 		err = NULL;
 		rc = add_hdr_case_adjust(key_beg, value_beg, &err);
 		if (rc < 0) {
-			ha_alert("h1-outgoing-headers-case-adjust-file '%s' : %s at line %d.\n",
+			ha_alert("h1-headers-case-adjust-file '%s' : %s at line %d.\n",
 				 hdrs_map.name, err, line);
 			err_code |= ERR_ALERT | ERR_FATAL;
 			free(err);
 			goto end;
 		}
 		if (rc > 0) {
-			ha_warning("h1-outgoing-headers-case-adjust-file '%s' : %s at line %d.\n",
+			ha_warning("h1-headers-case-adjust-file '%s' : %s at line %d.\n",
 				   hdrs_map.name, err, line);
 			err_code |= ERR_WARN;
 			free(err);
@@ -4151,7 +4151,7 @@
 }
 
 
-/* config parser for global "h1-outgoing-header-case-adjust" */
+/* config parser for global "h1-header-case-adjust" */
 static int cfg_parse_h1_header_case_adjust(char **args, int section_type, struct proxy *curpx,
 					   const struct proxy *defpx, const char *file, int line,
 					   char **err)
@@ -4165,7 +4165,7 @@
 	return add_hdr_case_adjust(args[1], args[2], err);
 }
 
-/* config parser for global "h1-outgoing-headers-case-adjust-file" */
+/* config parser for global "h1-headers-case-adjust-file" */
 static int cfg_parse_h1_headers_case_adjust_file(char **args, int section_type, struct proxy *curpx,
 						 const struct proxy *defpx, const char *file, int line,
 						 char **err)