PR Summary

This PR fixes incorrect automatic variable casing used throughout the documentation. E.g., $Args (incorrect) -> $args (correct).

This PR fixes all occurrences of:

• $Error
• $Event
• $ExecutionContext

Context

This series of PRs ensures the correct case is consistently used for each individual automatic variable, as documented in about_Automatic_Variables and verified by tab completion.

Changes in scope:

• Variables with a $ or @ sigil.
• Variables referenced by name without a sigil.

Out of scope:

• Preference variables (separate PRs to follow).
• Misuse of an automatic variable (e.g., naming a function parameter as $Input).
• Reference to the variable's value (e.g., false/False/FALSE when referring to the value of $false).

PR Checklist

• Descriptive Title: This PR's title is a synopsis of the changes it proposes.
• Summary: This PR's summary describes the scope and intent of the change.
• Contributor's Guide: I have read the contributors guide.
• Style: This PR adheres to the style guide.