update to the learn.arm.arm href for the rag demo

Author: pareenaverma

themes/arm-design-system-hugo-theme/layouts/partials/demo-components/config-rag.html

@@ -22,7 +22,7 @@
     <div class="c-row u-gap-1/2 u-flex-nowrap u-padding-top-0">
         <div class="c-col">
             <h2>RAG Vector Store Details</h2>
-            <p>This application uses all data on <a href="https://www.learn.arm.com">learn.arm.com</a>
+            <p>This application uses all data on <a href="https://learn.arm.com">learn.arm.com</a>
                 as the RAG dataset. The content across Learning Paths and Install Guides is segmented into labeled chunks, 
                 and vector embeddings are generated. 
                 This LLM demo references the FAISS vector store to answer your query.</p>