yanglint BUGFIX clarify ext data param
diff --git a/tools/lint/main_ni.c b/tools/lint/main_ni.c
index fedbe79..970a85a 100644
--- a/tools/lint/main_ni.c
+++ b/tools/lint/main_ni.c
@@ -206,7 +206,7 @@
printf(" -x FILE, --ext-data=FILE\n"
" File containing the specific data required by an extension. Required by\n"
- " the schema-mount extension, for example, when the mounted data are\n"
+ " the schema-mount extension, for example, when the operational data are\n"
" expected in the file. File format is guessed.\n\n");
printf(" -n, --not-strict\n"