pages need updating for the new Timeline gear-wheel icon

[petersampsonaudacity]

the following pages need updating for the new Timeline gear-wheel icon:

1. https://support.audacityteam.org/basics/audacity-editing
2. https://support.audacityteam.org/basics/sharing-audio-online
3. https://support.audacityteam.org/audio-editing/using-realtime-effects
4. https://support.audacityteam.org/audio-editing/loudness-normalization
5. https://support.audacityteam.org/music/enabling-music-view
6. https://support.audacityteam.org/music/making-audio-loops
7. https://support.audacityteam.org/troubleshooting/common-troubleshooting-steps
8. https://support.audacityteam.org/troubleshooting/solving-recording-problems/latency-compensation

These can probably most easily be achieved with a cut and paste of the new icon:

as I did for the many affected pages in the manual