Remove community mentions in bot posts

[apex-omontgomery]

Update airtable messages

Bots currently mention discourse community. Should remove mentioning them in the airtable. Currently the ones I could find that mention are:

#general
botname: Career Counseling
"Looking for a job, or advice on careers in the tech industry? Check out our #job_board and #career_advice channels, as well as our job portal at https://operationcode.org/jobs !" 

botname: FeedBack:
Want to help us get better? We'd love to hear your feedback at operationcode.org/feedback"

botname: Mentorship:
"Need help from a mentor? Ask a question in the #questions channel or request a one-on-one appointment at http://op.co.de/mentor-request !" 

I don't have access to airtable to view any other ones so this was all I could find through looking through history.