Update index.yml

capitalization fix

Author: v-albemi

articles/load-balancer/index.yml

@@ -28,7 +28,7 @@ landingContent:
             url: load-balancer-overview.md
           - text: Load Balancer concepts
             url: concepts.md
-          - text: Load balancer components
+          - text: Load Balancer components
             url: components.md
 
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