Fix typo

Change-Id: I69c3a6b6ca8d5a568ec7f052c742335dd50bda5b
Reviewed-on: https://gerrit.libreoffice.org/72714
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>

embeddedobj/source/commonembedding/persistence.cxx

@@ -1399,7 +1399,7 @@ void SAL_CALL OCommonEmbeddedObject::storeAsEntry( const uno::Reference< embed::
     m_aNewEntryName = sEntName;
     m_aNewDocMediaDescriptor = GetValuableArgs_Impl( lArguments, true );
 
-    // TODO: register listeners for storages above, in case thay are disposed
+    // TODO: register listeners for storages above, in case they are disposed
     //       an exception will be thrown on saveCompleted( true )
 
     // TODO: should the listener notification be done here or in saveCompleted?