Fix HTML entity for degree

* lisp/org-entities.el (org-entities): Fix HTML entity for degree.

Patch by Ult Stegemann.

lisp/org-entities.el

@@ -304,7 +304,7 @@ loaded, add these packages to `org-export-latex-packages-alist'."
     ("prod" "\\prod" t "∏" "[product]" "[n-ary product]" "∏")
     ("micro" "\\textmu{}" nil "µ" "micro" "µ" "µ")
     ("macr" "\\textasciimacron{}" nil "¯" "[macron]" "¯" "¯")
-    ("deg" "\\textdegree{}" nil "deg" "degree" "°" "°")
+    ("deg" "\\textdegree{}" nil "°" "degree" "°" "°")
     ("prime" "\\prime" t "′" "'" "'" "′")
     ("Prime" "\\prime{}\\prime" t "″" "''" "''" "″")
     ("infin" "\\propto" t "∞" "[infinity]" "[infinity]" "∞")