update docs for nestboxes

docs/plugins/nestboxes.rst

@@ -1,5 +1,12 @@
 nestboxes
 =========
+Tags:
 
-Automatically scan for and forbid fertile eggs incubating in a nestbox.
-Toggle status with `enable` or `disable <disable>`.
+Protect fertile eggs incubating in a nestbox. This plugin will automatically
+scan for and forbid fertile eggs incubating in a nestbox so that dwarves won't
+come to collect them for eating. The eggs will hatch normally, even when
+forbidden.
+
+Usage::
+
+    enable nestboxes

plugins/nestboxes.cpp

@@ -69,13 +69,10 @@ DFhackCExport command_result plugin_init (color_ostream &out, std::vector <Plugi
 {
     if (world && ui) {
         commands.push_back(
-            PluginCommand("nestboxes", "Automatically scan for and forbid fertile eggs incubating in a nestbox.",
-                nestboxes, false,
-                "To enable: nestboxes enable\n"
-                "To disable: nestboxes disable\n"
-                "There is no other configuration.\n"
-            )
-        );
+            PluginCommand(
+                "nestboxes",
+                "Protect fertile eggs incubating in a nestbox.",
+                nestboxes));
     }
     return CR_OK;
 }