Merge pull request #8 from EdwardBetts/spelling

correct spelling mistake

Author: njsmith

doc/bibliography.bib

@@ -3,7 +3,7 @@ @article{CAM02-UCS
   year = 2006,
   title = {Uniform colour spaces based on {CIECAM02} colour appearance model},
   journal = {Color Research \& Application},
-  volumne = 31,
+  volume = 31,
   number = 4,
   pages = {320--330},
   doi = {10.1002/col.20227},