Broken docs link to dielectrics methodology and consistency check details

[janosh]

Two small things

1. The link to the dielectrics methodology is broken.

https://docs.materialsproject.org/methodology/total-energies/#dielectric

The correct one would be https://docs.materialsproject.org/methodology/dielectricity.

2. Could you add more details to this sentence? What specific consistency checks does MP use?

Just as with the piezoelectric and elastic constants, multiple consistency checks are performed on all the calculated dielectric data to ensure its reliability and accuracy.