yanglint DOC description to searchpaths in help

... about the fact that it is searched recursively.

Author: lePici

tools/lint/cmd_searchpath.c

@@ -29,11 +29,11 @@ void
 cmd_searchpath_help(void)
 {
     printf("Usage: searchpath [--clear] [<modules-dir-path> ...]\n"
-            "                  Set paths of directories where to search for imports and\n"
-            "                  includes of the schema modules. The current working directory\n"
-            "                  and the path of the module being added is used implicitly.\n"
-            "                  The 'load' command uses these paths to search even for the\n"
-            "                  schema modules to be loaded.\n");
+            "                  Set paths of directories where to search for imports and includes\n"
+            "                  of the schema modules. Subdirectories are also searched. The current\n"
+            "                  working directory and the path of the module being added is used implicitly.\n"
+            "                  The 'load' command uses these paths to search even for the schema modules\n"
+            "                  to be loaded.\n");
 }
 
 void

tools/lint/examples/README.md

@@ -33,11 +33,11 @@ combination with the command name you are interested in:
 ```
 > help searchpath
 Usage: searchpath [--clear] [<modules-dir-path> ...]
-                  Set paths of directories where to search for imports and
-                  includes of the schema modules. The current working directory
-                  and the path of the module being added is used implicitly.
-                  The 'load' command uses these paths to search even for the
-                  schema modules to be loaded.
+                  Set paths of directories where to search for imports and includes
+                  of the schema modules. Subdirectories are also searched. The current
+                  working directory and the path of the module being added is used implicitly.
+                  The 'load' command uses these paths to search even for the schema modules
+                  to be loaded.
 ```
 
 The input files referred in this document are available together with this

tools/lint/main_ni.c

@@ -172,7 +172,8 @@ help(int shortout)
     printf("  -p PATH, --path=PATH\n"
             "                Search path for schema (YANG/YIN) modules. The option can be\n"
             "                used multiple times. The current working directory and the\n"
-            "                path of the module being added is used implicitly.\n\n");
+            "                path of the module being added is used implicitly. Subdirectories\n"
+            "                are also searched\n\n");
 
     printf("  -D, --disable-searchdir\n"
             "                Do not implicitly search in current working directory for\n"