Correct some spell errors, and also sync the content with extension's change log

Author: ypzhao-rocket

docs/usage/CHANGELOG.md

@@ -35,19 +35,23 @@
 
 ## Version 1.6.0: April 29, 2022
 
-- Feature: (Preview) support debug BASIC program files on UniVerse. Please refer online documentation about known issues.
+- Feature: (Preview) support debug BASIC program files on UniVerse. Please refer online documentation to see known issues.
 - Bug fix: show connection icon only when extension activated. 
 
 ## Version 1.5.0: March 31, 2022
 
 - Feature: support multiple workspace folders.
 - Enhancement: change some functions to support multiple workspace folders, for example, auto group view, connection to U2 server, etc.
-- Bug fix: fix 37 issues.
+- Bug fix: resolve incorrect syntax checking, for example, label name, REM function, etc.
+- Bug fix: resolve a compilation failed issue if VS Code upgraded to latest version.
+- Bug fix: make some messages more readable.
+- Bug fix: support more UV and UD keywords.
+- Bug fix: fix the issue formatting sometimes could not work.
 
 ## Version 1.4.0: January 28, 2022
 
 - Enhancement: show U2 server account name when connection established.
-- Bug fix: resolve some incorrect grammar / syntax releated bugs.
+- Bug fix: resolve some incorrect grammar / syntax related bugs.
 - Bug fix: resolve some incorrect / misspelling messages.
 
 ## Version 1.3.3: December 21, 2021