Fix WFK2-228 / JDF-520, Fix WFK2-259, and clean up.

Fix WFK2-228 / JDF-520 - Fix the Filter in kitchensink-spring-matrixvariables quickstart. Fix WFK2-259 - Fix typos in REAMDE.md file in kitchensink-spring-basic quickstart. Clean up formatting in kitchensink-spring quickstarts to match the Archetype.

The READMEs needed to be updated and there was a lot of bad formatting left from when Tejas let IntelliJ auto format them.