Propose fix typos and ignore emacs backup files

[jeis4wpi]

Reference issue

What does this implement/fix?

Propose fix typos and ignore emacs backup files

Additional information

CheckList

• Did you add an unittest for your new example or defect fix?
• Did you add documents for your new example?
• All CIs are green? (You can check it after submitting)

[AtsushiSakai]

@codex review

[Copilot]

Pull request overview

This PR improves code quality by fixing spelling errors in documentation and enhancing the .gitignore configuration. The changes are purely cosmetic and do not affect functionality - they correct 4 spelling mistakes in the FastSLAM1 documentation and add emacs backup file patterns to .gitignore.

Key Changes:

• Fixed 4 spelling errors in FastSLAM1 documentation ("measurment" → "measurement", "intialization" → "initialization" (2 instances), "funciton" → "function")
• Removed trailing whitespace throughout the FastSLAM1 documentation file
• Added emacs backup files (*~) to .gitignore

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

File	Description
.gitignore	Added pattern to ignore emacs backup files (*~)
docs/modules/4_slam/FastSLAM1/FastSLAM1_main.rst	Fixed spelling errors and removed trailing whitespace from code examples and documentation

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[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. 👍

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