minor correction in use_KEGGREST

R/use_KEGGREST.R

@@ -9,7 +9,7 @@ use_KEGGREST <- function(expr) {
   kegg_out <- try({ expr }, silent = TRUE)
   if (inherits(kegg_out, "try-error")) {
     message("'KEGGREST' query is not available at the moment. Are you connected",
-            "to internet and if so, please, try again later.")
+            " to internet and if so, please, try again later.")
     return(NULL)
   } else {
     return(kegg_out)