fix cardgrid link to LlamaIndex

Author: TC-MO

sources/platform/integrations/index.mdx

@@ -210,7 +210,7 @@ These integrations allow you to use Apify Actors as tools and data sources.
     />
     <Card
         title="LlamaIndex"
-        to="./integrations/llama"
+        to="./integrations/llama-index"
         imageUrl="/img/platform/integrations/llamaindex.jpeg"
         smallImage
     />