[KV] Fix formatting of read-key-value-pairs (#17019)

Author: vicb

src/content/docs/kv/api/read-key-value-pairs.mdx

@@ -24,13 +24,11 @@ export default {
     try {
       const value = await env.NAMESPACE.get("first-key");
 
-    if (value === null) {
-      return new Response("Value not found", {status: 404});
-    }
-      return new Response(value);
-    }
-    catch (e)
-    {
+      if (value === null) {
+        return new Response("Value not found", {status: 404});
+      }
+        return new Response(value);
+    } catch (e) {
       return new Response(e.message, {status: 500});
     }
   },