Fix tiny typos.

Those have been fixed by Paul Eggert in Emacs first.

lisp/ob-screen.el

@@ -37,7 +37,7 @@
 (require 'ob-ref)
 
 (defvar org-babel-screen-location "screen"
-  "The command location for screen. 
+  "The command location for screen.
 In case you want to use a different screen than one selected by your $PATH")
 
 (defvar org-babel-default-header-args:screen
@@ -111,7 +111,7 @@ In case you want to use a different screen than one selected by your $PATH")
     (with-temp-file tmpfile
       (insert body)
 
-      ;; org-babel has superflous spaces
+      ;; org-babel has superfluous spaces
       (goto-char (point-min))
       (delete-matching-lines "^ +$"))
     tmpfile))

lisp/org-table.el

@@ -3019,7 +3019,7 @@ them to individual field equations for each field."
 So @< and $< will always be replaced with @1 and $1, respectively.
 The advantage of these special markers are that structure editing of
 the table will not change them, while @1 and $1 will be modified
-when a line/row is swaped out of that privileged position.  So for
+when a line/row is swapped out of that privileged position.  So for
 formulas that use a range of rows or columns, it may often be better
 to anchor the formula with \"I\" row markers, or to offset from the
 borders of the table using the @< @> $< $> makers."