refactor(llm): rename LlmConfig to LLMConfig for consistency

Rename LlmConfig to LLMConfig across the codebase to follow consistent naming conventions.
Update all imports and usages to use the new name.
Update documentation and examples to reflect the change.

BREAKING CHANGE: LlmConfig has been renamed to LLMConfig. Users need to update their imports and usage.

deploy/docker/api.py

@@ -18,7 +18,8 @@ from crawl4ai import (
     CacheMode,
     BrowserConfig,
     MemoryAdaptiveDispatcher,
-    RateLimiter
+    RateLimiter, 
+    LLMConfig
 )
 from crawl4ai.utils import perform_completion_with_backoff
 from crawl4ai.content_filter_strategy import (
@@ -103,8 +104,10 @@ async def process_llm_extraction(
         else:
             api_key = os.environ.get(config["llm"].get("api_key_env", None), "")
         llm_strategy = LLMExtractionStrategy(
-            provider=config["llm"]["provider"],
-            api_token=api_key,
+            llm_config=LLMConfig(
+                provider=config["llm"]["provider"],
+                api_token=api_key
+            ),
             instruction=instruction,
             schema=json.loads(schema) if schema else None,
         )
@@ -164,8 +167,10 @@ async def handle_markdown_request(
                 FilterType.FIT: PruningContentFilter(),
                 FilterType.BM25: BM25ContentFilter(user_query=query or ""),
                 FilterType.LLM: LLMContentFilter(
-                    provider=config["llm"]["provider"],
-                    api_token=os.environ.get(config["llm"].get("api_key_env", None), ""),
+                    llm_config=LLMConfig(
+                        provider=config["llm"]["provider"],
+                        api_token=os.environ.get(config["llm"].get("api_key_env", None), ""),
+                    ),
                     instruction=query or "Extract main content"
                 )
             }[filter_type]