Update changelog path to reference the correct directory structure

Author: TheAngryByrd

Content/Library/build/build.fs

@@ -118,8 +118,10 @@ let READMElink = Uri(Uri(gitHubRepoUrl), $"blob/{releaseBranch}/{readme}")
 let CHANGELOGlink = Uri(Uri(gitHubRepoUrl), $"blob/{releaseBranch}/{changelogFile}")
 
 let changelogPath =
-    rootDirectory
-    </> changelogFile
+    IO.Path.GetFullPath(
+        rootDirectory
+        </> changelogFile
+    )
 
 let changelog = Fake.Core.Changelog.load changelogPath