Update filters.txt

[redtrillix]

Description:

Added instructions to filters.txt

Type of change:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Filter-list change

Checklist:

• My changes follows the style guidelines of this project
• I have performed a self-review of my changes
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have tested that these changes dont break anything
• Any dependent changes have been merged and published in downstream modules

Screenshots

Proof showing the creation/modification is working as expected

[viezly]

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