Add missing highlighter to readme

This was added to `.zpreztorc` in 4f19700919 but forgot to add it here.
7 years ago · ba0cb8afd8
1 changed files with 1 additions and 0 deletions
--- a/modules/syntax-highlighting/README.md
+++ b/modules/syntax-highlighting/README.md
@ -38,6 +38,7 @@ zstyle ':prezto:module:syntax-highlighting' highlighters \
				@@ -38,6 +38,7 @@ zstyle ':prezto:module:syntax-highlighting' highlighters \
  'main' \
  'brackets' \
  'pattern' \
+  'line' \
  'cursor' \
  'root'
 ```