doc: change 'defined be' to 'be defined'

Reorder 'defined be' to 'be defined'.

Signed-off-by: Torsten Rasmussen <[email protected]>

Author: tejlmand

doc/hardware/porting/board_porting.rst

@@ -250,7 +250,7 @@ board directory to a separate repository once it's working.)
 .. note::
 
   The board directory name does not need to match the name of the board.
-  Multiple boards can even defined be in one directory.
+  Multiple boards can even be defined in one directory.
 
 Your board directory should look like this: