docs: remove ambiguous we in README

[Cherrypick14]

Remove ambiguous we usage in FAQ section per ticket requirements.

Ticket: #6406.

Make sure these boxes are checked accordingly before submitting your Pull Request -- thank you.

Contribution style:

• I have read the contributing guide lines at
  https://docs.suricata.io/en/latest/devguide/contributing/contribution-process.html

Our Contribution agreements:

• I have signed the Open Information Security Foundation contribution agreement at
  https://suricata.io/about/contribution-agreement/ (note: this is only required once)

Changes (if applicable):

• I have updated the User Guide (in doc/userguide/) to reflect the changes made
• I have updated the JSON schema (in etc/schema.json) to reflect all logging changes
  (including schema descriptions)
• I have created a ticket at
  https://redmine.openinfosecfoundation.org/projects/suricata/issues

Link to ticket: https://redmine.openinfosecfoundation.org/issues/6406

Describe changes:

• Replaced ambiguous "we can discuss" with "feel free to open a discussion" in README FAQ
• This addresses ticket quic: Add QUIC App Layer - v8 #6406 requirement to remove "we" usages that refer to users
• Change improves clarity by making it explicit that users can initiate QA improvement discussions

Provide values to any of the below to override the defaults.

• To use a Suricata-Verify or Suricata-Update pull request,
  link to the pull request in the respective _BRANCH variable.
• Leave unused overrides blank or remove.

SV_REPO=
SV_BRANCH=
SU_REPO=
SU_BRANCH=

[inashivb]

Hi! Thanks for your contribution! :) Please note that the userguide resides in doc/userguide dir and that's what the ticket is about.

[Cherrypick14]

Hi @inashivb thank you for the feedback. It was an initial challenge I faced locating where to make the exact changes. Thanks again for the guidance.

[jufajardini]

Replaced by: #14054