docs: update browser and crawler run config documentation to match async_configs.py implementation

Updated browser-crawler-config.md and parameters.md to ensure complete
accuracy with the actual BrowserConfig and CrawlerRunConfig implementations.

Changes:
- Removed non-existent parameters from documentation:
  * enable_rate_limiting, rate_limit_config (never implemented)
  * memory_threshold_percent, check_interval, max_session_permit (internal to AsyncDispatcher)
  * display_mode (doesn't exist)

- Added missing BrowserConfig parameters (14 total):
  * browser_mode, use_managed_browser, cdp_url, debugging_port, host
  * viewport, chrome_channel, channel
  * accept_downloads, downloads_path, storage_state, sleep_on_close
  * user_agent_mode, user_agent_generator_config, enable_stealth

- Added missing CrawlerRunConfig parameters (29 total):
  * chunking_strategy, keep_attrs, parser_type, scraping_strategy
  * proxy_config, proxy_rotation_strategy
  * locale, timezone_id, geolocation, fetch_ssl_certificate
  * shared_data, wait_for_timeout
  * c4a_script, max_scroll_steps
  * exclude_all_images, table_score_threshold, table_extraction
  * exclude_internal_links, score_links
  * capture_network_requests, capture_console_messages
  * method, stream, url, user_agent, user_agent_mode, user_agent_generator_config
  * deep_crawl_strategy, link_preview_config, url_matcher, match_mode, experimental

- Marked deprecated cache parameters (bypass_cache, disable_cache, no_cache_read, no_cache_write)
- Reorganized parameters into logical sections (Content Processing, Browser Location & Identity,
  Caching & Session, Page Navigation & Timing, Page Interaction, Media Handling, Link/Domain
  Handling, Debug & Logging, Connection & HTTP, Virtual Scroll, URL Matching, Advanced Features)
- Ensured all parameter descriptions match source code docstrings
- Added proper default values from __init__ signatures

Author: SohamKukreti