Doc: use standard wording in \brief commands

QDoc does some magic with the \class and \namespaces
and \brief commands, so the following wording must be used:
"The xxx class yyy ..."

Change-Id: Id231f30e8464898b776888d5423523de404aae34
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

src/libs/qmljs/qmljsevaluate.cpp

@@ -37,7 +37,7 @@ using namespace QmlJS;
 
 /*!
     \class QmlJS::Evaluate
-    \brief Evaluates \l{AST::Node}s to \l{Value}s.
+    \brief The Evaluate class evaluates \l{AST::Node}s to \l{Value}s.
     \sa Value ScopeChain
 
     The Evaluate visitor is constructed with a ScopeChain and accepts JavaScript