fix range formatting error message typo (#7823)

helix-term/src/commands.rs

@@ -4178,7 +4178,7 @@ fn format_selections(cx: &mut Context) {
         })
     else {
         cx.editor
-            .set_error("No configured language server does not support range formatting");
+            .set_error("No configured language server supports range formatting");
         return;
     };