fix(help), prevent unintended coloring in option descriptions

[davidfirst]

This PR fixes an issue where parts of the flag descriptions in the help output were being colored green unintentionally. Specifically, hyphenated words within descriptions (e.g., task-name, task-aspect-id) were partially colored as if they were command-line options.

The following has been done to fix it:

• Modified the regular expression to only match standalone options at the beginning of each line.
• Ensured that hyphens within words in the descriptions are not matched and colored.
• The updated regex checks that the option is either at the start of the string or preceded by a non-alphanumeric character, preventing matches within words.