http2: fix typos in core.js

PR-URL: #36719
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
Reviewed-By: Yash Ladha <yash@yashladha.in>
Reviewed-By: James M Snell <jasnell@gmail.com>

lib/internal/http2/core.js

@@ -1249,7 +1249,7 @@ class Http2Session extends EventEmitter {
   }
 
   // If ping is called while we are still connecting, or after close() has
-  // been called, the ping callback will be invoked immediately will a ping
+  // been called, the ping callback will be invoked immediately with a ping
   // cancelled error and a duration of 0.0.
   ping(payload, callback) {
     if (this.destroyed)
@@ -1379,7 +1379,7 @@ class Http2Session extends EventEmitter {
     settingsFn();
   }
 
-  // Sumits a GOAWAY frame to be sent to the remote peer. Note that this
+  // Submits a GOAWAY frame to be sent to the remote peer. Note that this
   // is only a notification, and does not affect the usable state of the
   // session with the notable exception that new incoming streams will
   // be rejected automatically.