protocol: fix typo in description

 protocol/river-xkb-bindings-v1.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/protocol/river-xkb-bindings-v1.xml b/protocol/river-xkb-bindings-v1.xml
index 5d32967..55fb72f 100644
--- a/protocol/river-xkb-bindings-v1.xml
+++ b/protocol/river-xkb-bindings-v1.xml
@@ -190,7 +190,7 @@
         the window manager has been repeating some action since the pressed
         event.
 
-        This event is generally sent when some other (possible unbound) key is
+        This event is generally sent when some other (possibly unbound) key is
         pressed after the pressed event is sent and before the released event
         is sent for this binding.