Update publication year from 2019 to 2018

Author: HadenSmith

paper/paper.bib

@@ -1,10 +1,10 @@
-@techreport{england2019,
+@techreport{england2018,
   author      = {England, John F. and Cohn, Timothy A. and Faber, Beth A. and Stedinger, Jery R. and Thomas, Wilbert O. and Veilleux, Andrea G. and Kiang, Julie E. and Mason, Robert R.},
   title       = {Guidelines for Determining Flood Flow Frequency---{Bulletin} 17C},
   institution = {U.S. Geological Survey},
   type        = {Techniques and Methods},
   number      = {Book 4, Chapter B5},
-  year        = {2019},
+  year        = {2018},
   pages       = {148},
   doi         = {10.3133/tm4B5}
 }