Fix registry tags (#1452)

Author: ericning-o

registry.yaml

@@ -1605,15 +1605,12 @@
   authors:
     - msingh-openai
   tags:
-    - web-browsing
+    - completions
 
 - title: Prompt Caching 101 
   path: examples/Prompt_Caching101.ipynb
   date: 2024-10-01
   authors:
     - charuj
   tags:
-    - latency
-    - cost
-    - prompt caching
     - completions