README: fix link to CHANGELOG.md (#929)

Author: rud

CHANGELOG.md

@@ -6,6 +6,7 @@ Unreleased
 
 - Namespaces passed as procs are now evaluated every time, as opposed to just on initialization (nrw505)
 - Fix missing require of uri in ServerConfigParser (adam12)
+- Fix link to the CHANGELOG.md file in README.md (rud)
 
 3.2.2
 ==========

README.md

@@ -27,7 +27,7 @@ The name is a variant of Salvador Dali for his famous painting [The Persistence
 
 ## Contributing
 
-If you have a fix you wish to provide, please fork the code, fix in your local project and then send a pull request on github.  Please ensure that you include a test which verifies your fix and update `History.md` with a one sentence description of your fix so you get credit as a contributor.
+If you have a fix you wish to provide, please fork the code, fix in your local project and then send a pull request on github.  Please ensure that you include a test which verifies your fix and update the [changelog](CHANGELOG.md) with a one sentence description of your fix so you get credit as a contributor.
 
 ## Appreciation