Fix qdoc warnings

Change-Id: Ie51ccff3272f078e062380033678828a01f03eb8
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

src/corelib/itemmodels/qabstractproxymodel.cpp

@@ -492,7 +492,8 @@ QHash<int,QByteArray> QAbstractProxyModel::roleNames() const
     This method is useful if your proxy model wants to maintain the
     parent-child relationship of items in the source model.
     When reimplementing mapToSource(), you can call this method to
-    create an index of the source model.
+    create an index for row \a row and column \a col of the source model.
+
     A typical use would be to save the internal pointer coming from the source model
     in the proxy index when reimplementing mapFromSource() and use the same internal
     pointer as \a internalPtr to recover the original source index when

src/corelib/itemmodels/qsortfilterproxymodel.cpp

@@ -282,7 +282,7 @@ public:
 
     void remove_from_mapping(const QModelIndex &source_parent);
 
-    /*!
+    /*
      * Legacy: changing the pattern through a string does not change the
      * case sensitivity.
      */

src/corelib/kernel/qmetaobject.cpp

@@ -2144,7 +2144,7 @@ int QMetaMethod::revision() const
 
     Returns whether the method is const qualified.
 
-    \note This method might errorneously return \false for a const method
+    \note This method might errorneously return \c false for a const method
     if it belongs to a library compiled against an older version of Qt.
  */
 bool QMetaMethod::isConst() const