Fix minor documentation typo

This patch fixes a minor typo in Documentation/acpi-hotkey.txt.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/Documentation/acpi-hotkey.txt b/Documentation/acpi-hotkey.txt
index 744f1ae..38040fa 100644
--- a/Documentation/acpi-hotkey.txt
+++ b/Documentation/acpi-hotkey.txt
@@ -30,7 +30,7 @@
 echo "event_num:event_type:event_argument" > 
 	/proc/acpi/hotkey/action.
 The result of the execution of this aml method is 
-attached to /proc/acpi/hotkey/poll_method, which is dnyamically
+attached to /proc/acpi/hotkey/poll_method, which is dynamically
 created.  Please use command "cat /proc/acpi/hotkey/polling_method" 
 to retrieve it.