docs: fix broken link and remove uses of "master"

The link to the `struct CurveSegment` definition was broken.

BUG=b:162024466
TEST=check gitiles

Change-Id: Ia15cec2722365bb24a55d7f2826feedc233c3736
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/gestures/+/2316470
Tested-by: Harry Cutts <hcutts@chromium.org>
Auto-Submit: Harry Cutts <hcutts@chromium.org>
Reviewed-by: Sean O'Brien <seobrien@chromium.org>
Commit-Queue: Sean O'Brien <seobrien@chromium.org>
1 file changed