Add doc for removing heading on block - for #130

Author: logseq-cldwalker

db-version-changes.md

@@ -36,6 +36,7 @@ High level changes:
   * `>Quote` is `/Quote`
 * Code blocks, quote blocks and math blocks [have tags](./db-version.md#more-new-tags). Since properties are not are a part of the block content, properties can more naturally be added to these blocks.
 * Pdf annotations [have a tag](./db-version.md#more-new-tags). This allows annotations to be viewed across pdfs and to have custom views of annotations while using the pdf viewer.
+* Markdown syntax for blocks e.g. a heading or quote is no longer visible or editable. Removing a block's heading is done by right-click on a block and choosing the crossed out H icon.
 
 WIP changes:
 * Whiteboards are disabled for now and will be enabled later.