docs(quick-start): add <form> tag to quick start example (#467)

docs/framework/react/quick-start.md

@@ -25,20 +25,28 @@ export default function App() {
   return (
     <div>
       <form.Provider>
-        <div>
+        <form
-          <form.Field
+          onSubmit={(e) => {
-            name="fullName"
+            e.preventDefault();
-            children={(field) => (
+            e.stopPropagation();
-              <input
+            void form.handleSubmit();
-                name={field.name}
+          }}
-                value={field.state.value}
+        >
-                onBlur={field.handleBlur}
+          <div>
-                onChange={(e) => field.handleChange(e.target.value)}
+            <form.Field
-              />
+              name="fullName"
-            )}
+              children={(field) => (
-          />
+                <input
-        </div>
+                  name={field.name}
-        <button type="submit">Submit</button>
+                  value={field.state.value}
+                  onBlur={field.handleBlur}
+                  onChange={(e) => field.handleChange(e.target.value)}
+                />
+              )}
+            />
+          </div>
+          <button type="submit">Submit</button>
+        </form>
       </form.Provider>
     </div>
   )