update docs for follow

docs/plugins/follow.rst

@@ -1,5 +1,12 @@
 follow
 ======
-Makes the game view follow the currently highlighted unit after you exit from the
+Tags:
-current menu or cursor mode. Handy for watching dwarves running around. Deactivated
+:dfhack-keybind:`follow`
-by moving the view manually.
+
+Make the screen follow the selected unit. Once you exit from the current menu or
+cursor mode, the screen will stay centered on the unit. Handy for watching
+dwarves running around. Deactivated by moving the cursor manually.
+
+Usage::
+
+    follow

plugins/follow.cpp

@@ -31,11 +31,10 @@ uint8_t prevMenuWidth;
 DFhackCExport command_result plugin_init ( color_ostream &out, std::vector <PluginCommand> &commands)
 {
     commands.push_back(PluginCommand(
-        "follow", "Make the screen follow the selected unit",
+        "follow",
-        follow, Gui::view_unit_hotkey,
+        "Make the screen follow the selected unit.",
-        "  Select a unit and run this plugin to make the camera follow it.\n"
+        follow,
-        "  Moving the camera yourself deactivates the plugin.\n"
+        Gui::view_unit_hotkey));
-    ));
     followedUnit = 0;
     prevX=prevY=prevZ = -1;
     prevMenuWidth = 0;