LangCache: Edit cURL command and add Savings calculator

Author: cmilesb

content/develop/ai/langcache/api-examples.md

@@ -34,7 +34,7 @@ For example:
 curl -s -X POST "https://$HOST/v1/caches/$CACHE_ID/entries/search" \
     -H "accept: application/json" \
     -H "Authorization: Bearer $API_KEY" \
-    -d "{ 'prompt': 'What is semantic caching' }"
+    -d '{ "prompt": "What is semantic caching" }'
 {{< /clients-example >}}
 
 This example expects several variables to be set in the shell:

content/embeds/langcache-cost-reduction.md

@@ -18,4 +18,6 @@ Here’s an example:
 
 {{<note>}}
 The formula and numbers above provide a rough estimate of your monthly savings. Actual savings will vary depending on your usage.
-{{</note>}}
+{{</note>}}
+
+You can also use the [LangCache savings calculator](https://redis.io/calculator/langcache/) to estimate your annual savings with LangCache.