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/ssh/sshremoteprocessrunner.cpp

@@ -36,7 +36,8 @@
 /*!
     \class QSsh::SshRemoteProcessRunner
 
-    \brief Convenience class for running a remote process over an SSH connection.
+    \brief The SshRemoteProcessRunner class is a convenience class for
+    running a remote process over an SSH connection.
 */
 
 namespace QSsh {