Fix wrong links and a mistake in warm up introduction (#11423) (#11426)

Author: opensearch-trigger-bot[bot]

_vector-search/api/neural.md

@@ -455,7 +455,7 @@ POST /_plugins/_neural/warmup/index1,index2,index3
 ```
 {% include copy-curl.html %}
 
-You can use the warm up API operation with index patterns to clear one or more indexes that match a specified pattern from the cache:
+You can use the warm up API operation with index patterns to load one or more indexes that match a specified pattern into the cache:
 
 ```json
 POST /_plugins/_neural/warmup/index*

_vector-search/performance-tuning-sparse.md

@@ -54,7 +54,7 @@ Index building can benefit from using multiple threads. You can adjust the numbe
 
 ### Querying after a cold start
 
-After rebooting OpenSearch, the cache is empty, so the first several hundred queries may experience high latency. To address this "cold start" issue, you can use the [Warmup API]({{site.url}}{{site.baseurl}}/vector-search/api/knn/#warmup-operation). This API loads data from disk into cache, ensuring optimal performance for subsequent queries. You can also use the [Clear Cache API]({{site.url}}{{site.baseurl}}/vector-search/api/knn/#k-nn-clear-cache) to free up memory when needed.
+After rebooting OpenSearch, the cache is empty, so the first several hundred queries may experience high latency. To address this "cold start" issue, you can use the [Warmup API]({{site.url}}{{site.baseurl}}/vector-search/api/neural/#warm-up). This API loads data from disk into cache, ensuring optimal performance for subsequent queries. You can also use the [Clear Cache API]({{site.url}}{{site.baseurl}}/vector-search/api/neural/#clear-cache) to free up memory when needed.
 
 ### Force merging segments