Everywhere: Fix typos - act III

Author: https://github.com/szepeviktor
Commit: 19f88f96dc
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4300
Reviewed-by: https://github.com/AtkinsSJ ✅

Libraries/LibJS/Runtime/Completion.cpp

@@ -98,7 +98,7 @@ ThrowCompletionOr<Value> await(VM& vm, Value value)
     promise->perform_then(on_fulfilled, on_rejected, {});
 
     // FIXME: Since we don't support context suspension, we attempt to "wait" for the promise to resolve
-    //        by syncronously running all queued promise jobs.
+    //        by synchronously running all queued promise jobs.
     if (auto* agent = vm.agent()) {
         // Embedder case (i.e. LibWeb). Runs all promise jobs by performing a microtask checkpoint.
         agent->spin_event_loop_until(GC::create_function(vm.heap(), [success] {