Renames browser_config param to config in AsyncWebCrawler

Standardizes parameter naming convention across the codebase by renaming browser_config to the more concise config in AsyncWebCrawler constructor.

Updates all documentation examples and internal usages to reflect the new parameter name for consistency.

Also improves hook execution by adding url/response parameters to goto hooks and fixes parameter ordering in before_return_html hook.

docs/llm.txt/1_introduction.md

@@ -125,7 +125,7 @@ run_config = CrawlerRunConfig(
 
 ## 4. Basic Crawling & Simple Extraction
 ```python
-async with AsyncWebCrawler(browser_config=browser_config) as crawler:
+async with AsyncWebCrawler(config=browser_config) as crawler:
     result = await crawler.arun("https://news.example.com/article", config=run_config)
     print(result.markdown) # Basic markdown content
 ```
@@ -375,7 +375,7 @@ async def on_page_context_created_hook(context, page, **kwargs):
     await context.route("**/*.{png,jpg,jpeg}", lambda route: route.abort())
     print("[HOOK] Image requests blocked")
 
-async with AsyncWebCrawler(browser_config=browser_config) as crawler:
+async with AsyncWebCrawler(config=browser_config) as crawler:
     crawler.crawler_strategy.set_hook("on_page_context_created", on_page_context_created_hook)
     result = await crawler.arun("https://imageheavy.example.com", config=run_config)
     print("Crawl finished with images blocked.")