Fix typo (#20188)

packages/react-dom/src/events/DOMPluginEventSystem.js

@@ -551,7 +551,7 @@ export function dispatchEventForPluginEventSystem(
     if (
       enableLegacyFBSupport &&
       // If our event flags match the required flags for entering
-      // FB legacy mode and we are prcocessing the "click" event,
+      // FB legacy mode and we are processing the "click" event,
       // then we can defer the event to the "document", to allow
       // for legacy FB support, where the expected behavior was to
       // match React < 16 behavior of delegated clicks to the doc.

packages/react-dom/src/events/ReactDOMEventListener.js

@@ -252,7 +252,7 @@ export function dispatchEvent(
       return;
     }
     // We need to clear only if we didn't queue because
-    // queueing is accummulative.
+    // queueing is accumulative.
     clearIfContinuousEvent(domEventName, nativeEvent);
   }