Change comment in usqlrc in README.md

Author: kenshaw

README.md

@@ -1493,7 +1493,7 @@ in the user's `HOME` directory:
 $ cat $HOME/.usqlrc
 \echo WELCOME TO THE JUNGLE `date`
 \set SYNTAX_HL_STYLE paraiso-dark
-# display color prompt (default is prompt is "%S%m%/%R%#" )
+-- set color prompt (default is prompt is "%S%m%/%R%#" )
 \set PROMPT1 "\033[32m%S%m%/%R%#\033[0m"
 $ usql
 WELCOME TO THE JUNGLE Thu Jun 14 02:36:53 WIB 2018