Fix in Message Interface Documentation (#127)

* fix in documentation

* Update ubuntu-version for formatting

---------

Co-authored-by: Rahul Kar <[email protected]>

Author: jadaber

.github/workflows/ci.yml

@@ -111,7 +111,7 @@ jobs:
           path: ./
 
   formatting:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
       - name: Check formatting

docs/doxygen/pages.dox

@@ -254,7 +254,7 @@ bool myMessageRecvImplementation( MQTTAgentMessageContext_t * pMsgCtx,
 {
     int status = EXIT_FAILURE;
     void * pReceivedPointer;
-    if( ( pMsgCtx != NULL ) && ( pCommandToSend != NULL ) )
+    if( ( pMsgCtx != NULL ) && ( pReceivedCommand != NULL ) )
     {
         //A function to receive data from a queue.
         status = Queue_Recv( pMsgCtx->queue, &pReceivedPointer, blockTimeMs );