org.el: Fix two typos in docstrings.

* org.el (org-link-unescape, org-link-unescape-compound): Fix two
  typos in docstrings.

lisp/org.el

@@ -8945,7 +8945,7 @@ If optional argument MERGE is set, merge TABLE into
 	 (char-to-string char))) text "")))
 
 (defun org-link-unescape (str)
-  "Unhex hexified unicode strings as returned from the JavaScript function
+  "Unhex hexified Unicode strings as returned from the JavaScript function
 encodeURIComponent.  E.g. `%C3%B6' is the german Umlaut `ö'."
   (unless (and (null str) (string= "" str))
     (let ((pos 0) (case-fold-search t) unhexed)
@@ -8956,7 +8956,7 @@ encodeURIComponent.  E.g. `%C3%B6' is the german Umlaut `ö'."
   str)
 
 (defun org-link-unescape-compound (hex)
-  "Unhexify unicode hex-chars.  E.g. `%C3%B6' is the German Umlaut `ö'.
+  "Unhexify Unicode hex-chars.  E.g. `%C3%B6' is the German Umlaut `ö'.
 Note: this function also decodes single byte encodings like
 `%E1' (\"á\") if not followed by another `%[A-F0-9]{2}' group."
   (save-match-data