[TE] alerting - fix metric id link formatting
<tr>
<td><b>
<p>${reportCount} - <a
- href="${dashboardHost}/app/#/rootcause?metricId=${metricReport.metricId}">
+ href="${dashboardHost}/app/#/rootcause?metricId=${metricReport.metricId?c}">
${metricReport.metricName} by ${metricReport.dimensionName}</a> (baseline : ${metricReport.compareMode})
</p>
</b></td>
