Update README.md

Author: IsabellaARM

README.md

@@ -1,6 +1,9 @@
 Release repository: https://github.com/arm-software/ComputeLibrary
+
 Development repository: https://review.mlplatform.org/#/admin/projects/ml/ComputeLibrary
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 Please report issues here: https://github.com/ARM-software/ComputeLibrary/issues
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 **Make sure you are using the latest version of the library before opening an issue. Thanks**
 
 News:
@@ -16,7 +19,7 @@ Related projects:
 
 Documentation available here:
 
-- [v18.11](https://arm-software.github.io/ComputeLibrary/v18.11/)
+- [v18.11](https://arm-software.github.io/ComputeLibrary/v18.11/index.xhtml)
 - [v18.08](https://arm-software.github.io/ComputeLibrary/v18.08/)
 - [v18.05](https://arm-software.github.io/ComputeLibrary/v18.05/)
 - [v18.03](https://arm-software.github.io/ComputeLibrary/v18.03/)