Collector table description for develop guide. (#995)

* Register table description.

* Update Collector-Table-Description.md

Review and update the docs

* Update Collector-Table-Description.md

* Test link.

* Update Collector-Table-Description.md

* Tables of JVM Metric related finish.

* Table description finish.

* Update Collector-Table-Description.md

* Update Collector-Table-Description.md

* Module class rename to ModuleDefine, Module is the JDK9 class.

* Revert "Module class rename to ModuleDefine, Module is the JDK9 class."

This reverts commit 097665b97ea53b27565e362d28c2e8202710f4cd.

* Modify short column name.

* Modify the description of transaction metrics.

* Add section about collector table description in readme.

docs/README.md

@@ -29,6 +29,7 @@
   * Development Guides
     * [How to build project](en/How-to-build.md)
     * [Plugin development guide](en/Plugin-Development-Guide.md)
+    * [Collector table description](en/Collector-Table-Description.md)
     * Protocol
       * [Cross Process Propagation Headers Protocol, v1.0](en/Skywalking-Cross-Process-Propagation-Headers-Protocol-v1.md)
       * [SkyWalking Trace Data Protocol](en/Trace-Data-Protocol.md)