userguide: document how to "un-scratchpad" a window (Thanks knopwob)

diff --git a/docs/userguide b/docs/userguide
index 9ffb678eb4e70547ddc0a6d3003b2a00aaa08f03..cde7bfc4be2041807f1692493fd6da20cca8ed00 100644 (file)
--- a/docs/userguide
+++ b/docs/userguide
@@ -1724,7 +1724,9 @@ invisible until you show it again. There is no way to open that workspace.
 Instead, when using +scratchpad show+, the window will be shown again, as a
 floating window, centered on your current workspace (using +scratchpad show+ on
 a visible scratchpad window will make it hidden again, so you can have a
-keybinding to toggle).
+keybinding to toggle). Note that this is just a normal floating window, so if
+you want to "remove it from scratchpad", you can simple make it tiling again
+(+floating toggle+).
 
 As the name indicates, this is useful for having a window with your favorite
 editor always at hand. However, you can also use this for other permanently