Rename service GaussDB noSQL to GeminiDB

Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
Co-authored-by: Boka, Ladislav <ladislav.boka@t-systems.com>
Co-committed-by: Boka, Ladislav <ladislav.boka@t-systems.com>

otc_metadata/data/services/geminidb.yaml

@@ -0,0 +1,16 @@
+---
+environment: internal
+repositories:
+- environment: internal
+  repo: docs/geminidb
+  type: gitea
+- environment: public
+  repo: opentelekomcloud-docs/geminidb
+  type: github
+service_category: database
+service_title: GeminiDB
+service_type: geminidb
+service_uri: geminidb
+teams:
+- name: docs-database-rw
+  permission: write