Utils: fix likelyContainsLink for markdown

This allows us to also port the link in the resource tooltip to
markdown.

Change-Id: Iec0e19ff68db76290139e457694485222f0a38f3
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/cppeditor/resourcepreviewhoverhandler.cpp

@@ -181,9 +181,7 @@ QString ResourcePreviewHoverHandler::makeTooltip() const
     const Utils::MimeType mimeType = Utils::mimeTypeForFile(m_resPath);
     if (mimeType.name().startsWith("image", Qt::CaseInsensitive))
         ret += QString("![image](%1)  \n").arg(m_resPath);
-
-    ret += QString("<a href=\"file:///%1\">%2</a>")
-               .arg(m_resPath, QDir::toNativeSeparators(m_resPath));
+    ret += QString("[%1](%2)").arg(QDir::toNativeSeparators(m_resPath), m_resPath);
     return ret;
 }