Include Jewel Markdown modules (#175)

Include Jewel Markdown modules requires by Bazel
build of sherlock plugin.

Change-Id: I9a964e12cda684db1494c0d303b1f35e8e8c5af8

Author: sonakshisaxena1

sherlock-branding/resources/META-INF/SherlockPlatformPlugin.xml

@@ -15,6 +15,8 @@
     <module name="intellij.platform.jewel.foundation"/>
     <module name="intellij.platform.jewel.ui"/>
     <module name="intellij.platform.jewel.ideLafBridge"/>
+    <module name="intellij.platform.jewel.markdown.core"/>
+    <module name="intellij.platform.jewel.markdown.ideLafBridgeStyling"/>
   </content>
 
 </idea-plugin>