Rename minApiLevel method
Rename minApiLevel method

This method was originally created to fetch the API level for minimum API usage.  The logic of the method itself doesn't really pertain to minimum or deprecation - it's just finding a Doc Tag from the data elements.  Thus, this method should be renamed apiLevel() or something similar, with the "min" part removed to avoid confusion.

Bug: 129726096

google/dokka,google/dokka