Update labelling convention for list of interesting p-adic fields

[rvisser7]

The list of interesting p-adic fields still appears to use the old p-adic labelling convention.

This isn't a major issue on the interesting page itself, since the old label links (e.g. 2.2.0.1) correctly redirect to the new label links (e.g. 2.2.1.0a1.1). However, this does mean that currently the bottom knowls for all the interesting p-adic fields are not actually displayed at the bottom of their respective field pages.

e.g. the p-adic field 2.2.1.0a1.1 doesn't have the bottom knowl lf.2.2.0.1.bottom .