README: Fix "field" -> "fields" typo in caveat section
authorW. Trevor King <wking@tremily.us>
Fri, 20 Apr 2018 19:36:37 +0000 (12:36 -0700)
committerW. Trevor King <wking@tremily.us>
Fri, 20 Apr 2018 19:36:37 +0000 (12:36 -0700)
commit7cb77dc7d0e95b0187c40ff81b998e88f2de393b
tree2d6576958ce261b9dfdd02e1426b7851eb562e70
parenta56b7ee3cd3b228c9024325b459f55d4db204709
README: Fix "field" -> "fields" typo in caveat section

This snuck in with 954a3468 (pull: Update to the SPDX License List
3.0, 2017-12-29, #9), which added "tags" to the sentence but forgot to
make "field" plural.
README.md