docs: update "LLM-Connections" import and "Tasks" formatting (#1345)

* Update Tasks.md

Current formating of the page Tasks has been broken, fix the markdown formatting.

* Update LLM-Connections.md

LLM class has been moved to llm.py file

docs/core-concepts/Tasks.md

@@ -1,4 +1,3 @@
-```markdown
 ---
 title: crewAI Tasks
 description: Detailed guide on managing and creating tasks within the crewAI framework, reflecting the latest codebase updates.

docs/how-to/LLM-Connections.md

@@ -66,7 +66,8 @@ claude_agent = Agent(
 For more detailed configuration, use the LLM class:
 
 ```python
-from crewai import Agent, LLM
+from crewai import Agent
+from crewai.llm import LLM
 
 llm = LLM(
     model="gpt-4",