diff --git a/History.markdown b/History.markdown
index 17b56b13..e3c9b6a7 100644
--- a/History.markdown
+++ b/History.markdown
@@ -204,7 +204,7 @@
   * Remove Aerobatic (#9007)
   * Add Jekyll 3.9.2 release post to 'master' branch (#9013)
   * Simplify macOS installation docs (#8993)
-  * Improve document about Github Actions section (#8853)
+  * Improve document about GitHub Actions section (#8853)
   * Update permalinks.md  (#9017)
   * Add clarity to docs on permalinks placeholders and built-ins (#8995)
   * Remove Ionic Framework site from showcase (#9057)
@@ -1278,7 +1278,7 @@
   * make flakey test more robust (#6277)
   * Add a quick test for DataReader (#6284)
   * script/backport-pr: commit message no longer includes the `#` (#6289)
-  * Add Add CODEOWNERS file to help automate reviews. (#6320)
+  * Add CODEOWNERS file to help automate reviews. (#6320)
   * Fix builds on codeclimate (#6333)
   * Bump rubies on Travis (#6366)
 
@@ -2336,7 +2336,7 @@
   * Fixed an unclear code comment in site template SCSS (#3837)
   * Fix reading of binary metadata file (#3845)
   * Remove var collision with site template header menu iteration variable (#3838)
-  * Change non-existent `hl_linenos` to `hl_lines` to allow passthrough in safe mode (#3787)
+  * Change nonexistent `hl_linenos` to `hl_lines` to allow passthrough in safe mode (#3787)
   * Add missing flag to disable the watcher (#3820)
   * Update CI guide to include more direct explanations of the flow (#3891)
   * Set `future` to `false` in the default config (#3892)
@@ -2645,7 +2645,7 @@
   * Document the `name` variable for collection permalinks (#2829)
   * Adds info about installing jekyll in current dir (#2839)
   * Remove deprecated `jekyll-projectlist` plugin from list of third-party plugins (#2742)
-  * Remove tag plugins that are built in to Jekyll (#2751)
+  * Remove tag plugins that are built into Jekyll (#2751)
   * Add `markdown-writer` package for Atom Editor to list of third-party plugins (#2763)
   * Fix typo in site documentation for collections (#2764)
   * Fix minor typo on plugins docs page (#2765)