swupdate.bbclass: fix typo in comments

Fix explicitely -> explicitly
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Acked-by: Stefano Babic <sbabic@denx.de>

classes/swupdate.bbclass

@@ -22,7 +22,7 @@
 #     SWUPDATE_IMAGES_FSTYPES[core-image-full-cmdline] = ".ext4.gz"
 #   For this example either a file core-image-full-cmdline-${MACHINE}.ext4.gz or a file
 #   core-image-full-cmdline.ext4.gz gets added the swu archive. Optionally the variable
-#   SWUPDATE_IMAGES_NOAPPEND_MACHINE allows to explicitley define if the MACHINE name
+#   SWUPDATE_IMAGES_NOAPPEND_MACHINE allows to explicitly define if the MACHINE name
 #   must be part of the image file name or not.
 # * image file name(s)
 #   Example:
@@ -137,9 +137,9 @@ python do_swuimage () {
         encrypted = (d.getVarFlag("SWUPDATE_IMAGES_ENCRYPTED", image, True) or "")
         if fstypes:
             noappend_machine = d.getVarFlag("SWUPDATE_IMAGES_NOAPPEND_MACHINE", image, True)
-            if noappend_machine == "0":  # Search for a file explicitely with MACHINE
+            if noappend_machine == "0":  # Search for a file explicitly with MACHINE
                 imagebases = [ image + '-' + d.getVar('MACHINE', True) ]
-            elif noappend_machine == "1":  # Search for a file explicitely without MACHINE
+            elif noappend_machine == "1":  # Search for a file explicitly without MACHINE
                 imagebases = [ image ]
             else:  # None, means auto mode. Just try to find an image file with MACHINE or without MACHINE
                 imagebases = [ image + '-' + d.getVar('MACHINE', True), image ]