User guide: Replace outdated category name with link

The "Gigs and Collaborations" category was renamed "Jobs and Paid Consultancy", so the previous content was outdated.
Rather than expect the reader to hunt through the categories to find it, it is more friendly to link directly to it.

Author: per1234

content/categories/using-arduino/installation-troubleshooting/_topics/how-to-get-the-best-out-of-this-forum/1.md

@@ -283,13 +283,13 @@ You might have read answers from a particular person and think that person would
 
 ### [Commercial projects](#commercial-projects)
 
-One thing really guaranteed to ensure you don't get help is to tell us you can't provide all the information because it is commercially confidential. If it's commercially confidential then you should consider paying someone to help you and ensure a confidentiality agreement is in place with them. If you want help with a commercial project then create a topic in 'Gigs and Collaborations' and indicate what your terms are, including how much your budget is. This is a hobby forum, not a place for free help with commercial projects.
+One thing really guaranteed to ensure you don't get help is to tell us you can't provide all the information because it is commercially confidential. If it's commercially confidential then you should consider paying someone to help you and ensure a confidentiality agreement is in place with them. If you want help with a commercial project then create a topic in https://forum.arduino.cc/c/community/jobs/42 and indicate what your terms are, including how much your budget is. This is a hobby forum, not a place for free help with commercial projects.
 
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 ### [Ready written code](#ready-written-code)
 
-Ready written code for every possible application does not exist, including for your application. Asking for the code for what you are trying to do will not get you anywhere, other than possibly some annoyed replies. You either have to write your own, which we are here to help with when you get stuck, or you can pay for someone else to write it for you. If you want someone to write code for you the place to ask is 'Gigs and Collaborations'. If you neither want to learn to write code yourself nor pay someone else to do it for you then this is probably not the right place for you.
+Ready written code for every possible application does not exist, including for your application. Asking for the code for what you are trying to do will not get you anywhere, other than possibly some annoyed replies. You either have to write your own, which we are here to help with when you get stuck, or you can pay for someone else to write it for you. If you want someone to write code for you the place to ask is https://forum.arduino.cc/c/community/jobs/42. If you neither want to learn to write code yourself nor pay someone else to do it for you then this is probably not the right place for you.
 
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