Update module.xml

Description added.
To update the description of your module in the public register ZPM, merge the pull request and update the release in Open Exchange please.
https://openexchange.intersystems.com/markdown?url=assets%2Fdoc%2Freleases.md
Thanks.

Author: SergeyMi37

module.xml

@@ -2,7 +2,8 @@
 <Export generator="Cache" version="25">
 <Document name="TestCoverage.ZPM"><Module>
   <Name>TestCoverage</Name>
-  <Version>2.1.1</Version>
+  <Version>2.1.2</Version>
+  <Description>Run your typical ObjectScript %UnitTest tests and see which lines of your code are executed. Includes Cobertura-style reporting for use in continuous integration tools.</Description>
   <Packaging>module</Packaging>
   <Resources>
     <Resource Name="TestCoverage.PKG">