[implant] Fix regex for parameters

[damgouj]

Proposed changes

• Fix the regex which replaces parameters to make Payloads work (like "C2 Data Exfiltration")

Related issues

• Fix technical Payload C2 Data Exfiltration giving us "need to analyze more" openbas#1833

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality

Further comments

To test, look at the notion page "implant" to generate an implant for your local dev env.