docs: fix Google Analytics tracking key for Just-the-Docs theme

Author: bsayli

docs/_config.yml

@@ -3,7 +3,6 @@ description: Type-safe OpenAPI clients with generics (Spring Boot + OpenAPI Gene
 
 just_the_docs:
   custom_css: assets/css/custom.css
-  ga_measurement_id: G-9Z9V8KDZVW
 
 remote_theme: just-the-docs/just-the-docs
 
@@ -16,4 +15,6 @@ aux_links:
 
 search_enabled: true
 
-baseurl: "/spring-boot-openapi-generics-clients"
+baseurl: "/spring-boot-openapi-generics-clients"
+
+ga_tracking: G-9Z9V8KDZVW