dt-bindings: mfd: Fix typo in file name of twl-familly.txt

Signed-off-by: Jonathan Neuschäfer <[email protected]>
Signed-off-by: Rob Herring <[email protected]>

Author: neuschaefer

Documentation/devicetree/bindings/input/twl4030-pwrbutton.txt

@@ -1,7 +1,7 @@
 Texas Instruments TWL family (twl4030) pwrbutton module
 
 This module is part of the TWL4030. For more details about the whole
-chip see Documentation/devicetree/bindings/mfd/twl-familly.txt.
+chip see Documentation/devicetree/bindings/mfd/twl-family.txt.
 
 This module provides a simple power button event via an Interrupt.