Here is a guide that shows you step-by-step how to re-adjust your shower glass door to stop it from rubbing:
Place wood shims under the glass door, one at each end of the door.
Loosen the screws on the clamp of the top hinge. You may also loosen those at the bottom if necessary
This allows you to adjust the door upwards and toward the wall, creating space between the glass door and the adjacent glass panel.
Place a wooden shim in this space.
Tighten the screws.