Update CHANGELOG.md

Author: Patrick Sachs

CHANGELOG.md

@@ -2,37 +2,38 @@
 
 ## Unreleased
 
-- Nothing so far
+- Invalid URL in Readme fixed.
+- Changelog typo fixes.
 
 ## 2.2.1
 
-- Fixed inavlid usage of `charset=utf-8` in the accept header when sending a JSON request
+- Fixed inavlid usage of `charset=utf-8` in the accept header when sending a JSON request.
 
 ## 2.2.0
 
 - Allow setting default options for URLs. By @MatthiasDummler
 
 ## 2.1.0
 
-- Allow calling the `json` and `ajax` functions with just a single parameter
+- Allow calling the `json` and `ajax` functions with just a single parameter.
 
 ## 2.0.1
 
-- Recompiled the source code
-- License changed to Apache 2.0
+- Recompiled the source code.
+- License changed to Apache 2.0.
 
 ## 2.0.0
 
-- Package name changed from `ajax` to `@sahnee/ajax`
+- Package name changed from `ajax` to `@sahnee/ajax`.
 
 ## 1.0.2
 
 - Allow more flexible parameters in functions accepting URLs.
 
-## 1.0.0
+## 1.0.1
 
-- Fixed incrrect typescript definitions
+- Fixed incorrect typescript definitions.
 
 ## 1.0.0
 
-- Initial release
+- Initial release.