Merge branch '262057-edit-markdown-md-to-minimize-the-number-of-notes' into 'master'

Resolve "Edit markdown.md to minimize the number of notes"

See merge request gitlab-org/gitlab!49234

doc/user/markdown.md

@@ -477,7 +477,7 @@ In addition to this, links to some objects are also recognized and formatted. So
 
 ### Task lists
 
-> If this is not rendered correctly, [view it in GitLab itself](https://gitlab.com/gitlab-org/gitlab/blob/master/doc/user/markdown.md#task-lists).
+If this section is not rendered correctly, [view it in GitLab itself](https://gitlab.com/gitlab-org/gitlab/blob/master/doc/user/markdown.md#task-lists).
 
 You can add task lists anywhere Markdown is supported, but you can only "click"
 to toggle the boxes if they are in issues, merge requests, or comments. In other
@@ -780,6 +780,7 @@ But let's throw in a <b>tag</b>.
 
 There are multiple ways to emphasize text in Markdown. You can italicize, bold, strikethrough,
 as well as combine these emphasis styles together.
+Strikethrough is not part of the core Markdown standard, but is part of GFM.
 
 Examples:
 
@@ -801,9 +802,6 @@ Combined emphasis with **asterisks and _underscores_**.
 
 Strikethrough uses two tildes. ~~Scratch this.~~
 
-NOTE: **Note:**
-Strikethrough is not part of the core Markdown standard, but is part of GFM.
-
 #### Multiple underscores in words and mid-word emphasis
 
 If this section is not rendered correctly, [view it in GitLab](https://gitlab.com/gitlab-org/gitlab/blob/master/doc/user/markdown.md#multiple-underscores-in-words).