QtSql: Stylistic fixes based on the Qt 6.6 api review

Amends 12909d7c3df74b88382b727cfd3e215914f291ba and 0efd8854c4b32ec0b011efbf6b3a1990fe684e32.

Change-Id: Id7cb7377bcd1f32092330d2fc5b2fa5b83ce941f
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
(cherry picked from commit 7a732413ffbba41e365fde7aa73351f9f98bd07d)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

src/sql/kernel/qsqldatabase.h

@@ -49,7 +49,7 @@ public:
     QSqlIndex primaryIndex(const QString& tablename) const;
     QSqlRecord record(const QString& tablename) const;
 #if QT_DEPRECATED_SINCE(6, 6)
-    QT_DEPRECATED_VERSION_X_6_6("QSqlQuery::exec() instead.")
+    QT_DEPRECATED_VERSION_X_6_6("Use QSqlQuery::exec() instead.")
     QSqlQuery exec(const QString& query = QString()) const;
 #endif
     QSqlError lastError() const;

src/sql/kernel/qsqldriver.h

@@ -51,7 +51,7 @@ public:
         SQLite,
         Interbase,
         DB2,
-        MimerSQL
+        MimerSQL,
     };
 
     explicit QSqlDriver(QObject *parent = nullptr);