Fix typos in release notes

This is to fix below typos in release notes:
  ideintify
  currnt
  upating
  debuggin
  micoversion
  initisialisation

Change-Id: I48e8fcfbe4ed6a5d7a4c4056bd5de69ef5adebf0
diff --git a/releasenotes/notes/12/12.2.0-service_client_config-8a1d7b4de769c633.yaml b/releasenotes/notes/12/12.2.0-service_client_config-8a1d7b4de769c633.yaml
index 3e43f9a..985acb0 100644
--- a/releasenotes/notes/12/12.2.0-service_client_config-8a1d7b4de769c633.yaml
+++ b/releasenotes/notes/12/12.2.0-service_client_config-8a1d7b4de769c633.yaml
@@ -3,4 +3,4 @@
   - A new helper method `service_client_config` has been added
     to the stable module config.py that returns extracts from
     configuration into a dictionary the configuration settings
-    relevant for the initisialisation of a service client.
+    relevant for the initialization of a service client.