Fixing error on markdown

Update README with information to modify documentation repository.

doc/index.md

@@ -3,22 +3,32 @@
 # Release X.X.X-rc
 
 This release includes next changes:
-- New register flow to ensure:
+
+**New register flow to ensure:**
+
   - isolation between CCF and Register services.
   - Improve security, with split resposability between administrator operations and common user.
-- Improved Testing with Robot in order to cover:
+
+**Improved Testing with Robot in order to cover:**
+
   - New Register flows.
   - Allow different URLs for register, ccf and vault services.
-- Improved security on DB:
+
+**Improved security on DB:**
+
   - Credentials requested to access mongo databases.
   - Credentials requested also by mongo-express.
-- Scripts upgraded:
+
+**Scripts upgraded:**
+
   - docker compose version 2 used on them.
   - New cleaning script developed.
-- Cleanup of capif repository:
+
+**Cleanup of capif repository:**
+
   - Documentation is now on splitted repository [OCF Documentation Repository]
   - Test plan was moved to [OCF Documentation Repository]
-  - Some obsolote data is removed.
+  - Obsolote data is removed.
 
 
 # Release 0.0