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/utils/synchronousprocess.cpp

@@ -48,8 +48,8 @@
 /*!
     \class Utils::SynchronousProcess
 
-    \brief Runs a synchronous process in its own event loop
-    that blocks only user input events. Thus, it allows for the gui to
+    \brief The SynchronousProcess class runs a synchronous process in its own
+    event loop that blocks only user input events. Thus, it allows for the GUI to
     repaint and append output to log windows.
 
     The stdOut(), stdErr() signals are emitted unbuffered as the process