Fixed label in "Tap Dance" tab

[aciceri]

"On tap + hold" actually means to double tap and hold.
I didn't start the application with this new label but the change looks harmless.

[xyzz]

Hm, I lifted these descriptions from ZSA configurator:

Though I see now that QMK docs use "double tap and hold" in their tap dance docs - https://docs.qmk.fm/#/feature_tap_dance?id=example-4 - so not sure which one is more accurate.

[aciceri]

From a pragmatic stand I think that for the end user (like me yesterday) of this application it's much more intuitive reading "Double tap and hold". What should be the difference between "on hold" and "on tap + hold"?

However I understand the need to reflect the labels used upstream (in this case ambiguous).