docs update

docs/my-website/docs/caching/gpt_cache.md

@@ -3,18 +3,31 @@
 GPTCache is a Library for Creating Semantic Cache for LLM Queries
 
 GPTCache Docs: https://gptcache.readthedocs.io/en/latest/index.html#
+
 GPTCache Github: https://github.com/zilliztech/GPTCache
 
 ## Usage
 
 ### Install GPTCache
+```
 pip install gptcache
+```
 
 ### Using GPT Cache with Litellm Completion()
 
+#### Using GPTCache
+In order to use GPTCache the following lines are used to instantiat it
 ```python
 from gptcache import cache
-from litellm.cache import completion
+# set API keys in .env / os.environ
+cache.init()
+cache.set_openai_key()
+```
+
+#### Full Code using GPTCache and LiteLLM
+```python
+from gptcache import cache
+from litellm.cache import completion # import completion from litellm.cache
 import time
 
 # Set your .env keys