chore(docs): shorten site title and simplify custom CSS

- Updated _config.yml title to "OpenAPI Generics Clients" for better sidebar fit
- Removed unnecessary sidebar/main-content overrides
- Kept only .site-title styles in custom.css for cleaner layout

Author: barissayli

docs/_config.yml

@@ -1,4 +1,4 @@
-title: Spring Boot OpenAPI Generics Clients
+title: OpenAPI Generics Clients
 description: Type-safe OpenAPI clients with generics (Spring Boot + OpenAPI Generator)
 
 just_the_docs:

docs/assets/css/custom.css

@@ -5,12 +5,4 @@
     line-height: 1.3 !important;
     text-align: center !important;
     padding: 0.5rem !important;
-}
-
-.side-bar {
-    width: 340px !important;
-}
-
-.main-content {
-    margin-left: 360px !important;
 }