fix rust ctags mappings

Author: Lubos Kosco

src/org/opensolaris/opengrok/analysis/Ctags.java

@@ -217,7 +217,7 @@ private void initialize() throws IOException {
             command.add("--regex-rust=/^[[:space:]]*(pub[[:space:]]+)?type[[:space:]]+([[:alnum:]_]+)/\\2/T,types,type definitions/");
             command.add("--regex-rust=/^[[:space:]]*(pub[[:space:]]+)?enum[[:space:]]+([[:alnum:]_]+)/\\2/g,enum,enumeration names/");
             command.add("--regex-rust=/^[[:space:]]*(pub[[:space:]]+)?struct[[:space:]]+([[:alnum:]_]+)/\\2/S,structure names/");
-            command.add("--regex-rust=/^[[:space:]]*(pub[[:space:]]+)?mod[[:space:]]+([[:alnum:]_]+)/\\2/n,modules,module names/");
+            command.add("--regex-rust=/^[[:space:]]*(pub[[:space:]]+)?mod[[:space:]]+([[:alnum:]_]+)/\\2/N,modules,module names/");
             command.add("--regex-rust=/^[[:space:]]*(pub[[:space:]]+)?(static|const)[[:space:]]+(mut[[:space:]]+)?([[:alnum:]_]+)/\\4/C,consts,static constants/");
             command.add("--regex-rust=/^[[:space:]]*(pub[[:space:]]+)?(unsafe[[:space:]]+)?trait[[:space:]]+([[:alnum:]_]+)/\\3/r,traits,traits/");
             command.add("--regex-rust=/^[[:space:]]*(pub[[:space:]]+)?(unsafe[[:space:]]+)?impl([[:space:]\n]*<[^>]*>)?[[:space:]]+(([[:alnum:]_:]+)[[:space:]]*(<[^>]*>)?[[:space:]]+(for)[[:space:]]+)?([[:alnum:]_]+)/\\5 \\7 \\8/I,impls,trait implementations/");