docs: Patch version number

Author: Gumball2415

hlp/main_index.htm

@@ -30,7 +30,7 @@
     <span class="title">Welcome to Dn-FamiTracker</span>
 
     <hr />
-    <span class="copyright"><em>Version Dn0.5.2</em></span></br>
+    <span class="copyright"><em>Version Dn0.5.3</em></span></br>
 
     <p class="heading">Overview</p>
 
@@ -129,4 +129,4 @@
         Dn-Famitracker copyright &copy; 2020-2026 D.P.C.M.
     </br>
 </body>
-</html>
+</html>

version_update.md

@@ -3,7 +3,10 @@
 listing out things to do so i won't forget to do them -persune
 
 - [ ] Create a version tag, must correspond to parent repo's version tag
-- [ ] Update copyright years, version, and version in `main_index.htm`
+- [ ] in `main_index.htm`:
+	- [ ] Update copyright years
+	- [ ] Update version
+	- [ ] Update links, if needed
 - [ ] Update [CHANGELOG.md](CHANGELOG.md) to reflect latest version.
 	- see  [commit changelog format](../docs/commit_changelog_format.md) of parent Dn-FamiTracker repository
 - [ ] Push version tag to the repo