Change URL references from pdsimg.jpl.nasa.gov to pds-imaging.jpl.nasa.gov

[riverma]

Brief Description

The Planetary Data System Imaging Node (PDS-IMG) is deprecating the URL pdsimg.jpl.nasa.gov, in place of the more utilized pds-imaging.jpl.nasa.gov. References should be updated to ensure links to PDS-IMG continue to work.

Expected Behavior

• Update all code, README, etc., references of pdsimg.jpl.nasa.gov to pds-imaging.jpl.nasa.gov

Current Behavior

• References to pdsimg.jpl.nasa.gov exist within repository