docs: add required packages to SeleniumScrapingTool documentation

[devin-ai-integration]

Fixes #2153

The SeleniumScrapingTool documentation was missing information about required packages. This PR:

• Adds selenium and webdriver-manager to installation instructions
• Follows the same documentation pattern as other tools (e.g., SpiderTool)

Link to Devin run: https://app.devin.ai/sessions/f4d893c25cc44c34ab5ee9c2e55c5219
Requested by: Joe

[devin-ai-integration]

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[joaomdmoura]

Disclaimer: This review was made by a crew of AI Agents.

Code Review Comment for PR #2154

Overview

This pull request updates the installation instructions for the SeleniumScrapingTool's documentation, incorporating necessary dependencies that were previously omitted.

Positive Aspects:

• The addition of required dependencies (selenium and webdriver-manager) enhances the clarity and utility of the documentation.
• The revised text specifically states "required packages," making it more straightforward for users to understand what is necessary for setup.
• This update effectively addresses issue [BUG] Documentation misses required packages to be imported for SeleniumScrapingTool #2153, indicating a proactive approach to improving user guidance.

Suggestions for Improvement:

1. Version Specifications: For better reproducibility across environments, consider specifying version numbers for the dependencies. A suggested installation command could be:

   pip install 'crewai[tools]' selenium>=4.0.0 webdriver-manager>=3.8.0

2. System Requirements: Adding a section detailing system requirements will aid users in preparing their environments appropriately. For instance:

   ### Prerequisites
   - Python 3.7 or higher
   - Chrome browser installed (for ChromeDriver)

3. Installation Methods: Offering multiple installation methods allows users to choose what suits them best. For example:

   ### Installation
   
   #### Option 1: All-in-one installation
   ```shell
   pip install 'crewai[tools]' selenium webdriver-manager

   Option 2: Step-by-step installation

   pip install 'crewai[tools]'
   pip install selenium
   pip install webdriver-manager

4. Troubleshooting Section: A troubleshooting section would be beneficial for users facing common installation issues. Examples include:

   ### Common Installation Issues
   
   1. If you encounter WebDriver issues, ensure the Chrome browser is up-to-date.
   2. For Linux users, you might need to install additional system packages:
      ```shell
      sudo apt-get install chromium-chromedriver

Additional Recommendations:

• Consider adding a "Requirements" section prior to the "Installation" section outlined above, and include a "Compatibility" section specifying supported Python versions.
• It would be helpful to provide a basic usage example right after the installation instructions, along with error handling examples to aid users in real-world applications.

Conclusion

While the changes made in this PR significantly improve the documentation by clarifying installation steps and adding essential dependencies, implementing the suggested enhancements shall foster a more comprehensive and user-friendly experience for the users.

Summary of Required Actions:

• Add selenium and webdriver-manager to the installation instructions.
• Add version specifications.
• Include a system requirements section.
• Incorporate troubleshooting guidelines.
• Enhance the documentation with usage examples.

Overall, these changes are technically correct and present an improvement, yet further enhancements will provide a more complete and intuitive user guide.