bitbake-whatchanged: change ending quote to proper period

Pretty sure that trailing quote should be a period; it
appears to work properly.

(From OE-Core rev: 579f9ada19bd174bff0002cd6a731d12a1868252)

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/bitbake-whatchanged

@@ -217,7 +217,7 @@ print what will be done between the current and last builds, for example:
     # Edit the recipes
     $ bitbake-whatchanged core-image-sato
 
-The changes will be printed"
+The changes will be printed.
 
 Note:
     The amount of tasks is not accurate when the task is "do_build" since