docs: Fix import

docs/my-website/docs/providers/gemini.md

@@ -6,7 +6,7 @@
 # Gemini-Pro
 ## Sample Usage
 ```python
-import litellm
+from litellm import completion
 import os
 
 os.environ['GEMINI_API_KEY'] = ""
@@ -24,7 +24,7 @@ LiteLLM Supports the following image types passed in `url`
 ## Sample Usage
 ```python
 import os
-import litellm 
+import litellm
 from dotenv import load_dotenv
 
 # Load the environment variables from .env file

docs/my-website/docs/providers/palm.md

@@ -5,7 +5,7 @@
 
 ## Sample Usage
 ```python
-import litellm
+from litellm import completion
 import os
 
 os.environ['PALM_API_KEY'] = ""
@@ -17,7 +17,7 @@ response = completion(
 
 ## Sample Usage - Streaming
 ```python
-import litellm
+from litellm import completion
 import os
 
 os.environ['PALM_API_KEY'] = ""

docs/my-website/docs/providers/vertex.md

@@ -17,7 +17,7 @@ import litellm
 litellm.vertex_project = "hardy-device-38811" # Your Project ID
 litellm.vertex_location = "us-central1"  # proj location
 
-response = completion(model="gemini-pro", messages=[{"role": "user", "content": "write code for saying hi from LiteLLM"}])
+response = litellm.completion(model="gemini-pro", messages=[{"role": "user", "content": "write code for saying hi from LiteLLM"}])
 ```
 
 ## Set Vertex Project & Vertex Location