Partially updates SVG AAM links and references

All incorrect text other than the following outstanding issues are
fixed in this commit:

- "Normative" and "Informative" definitions do not appear in Important
Terms section, and therefore the links do not work.
- #issue-2 link in A.2 Issue Summary only works if mapping table is in
table view or the textPath details element is expanded.
- Links to core-aam mapping table don't work, as all IDs on the summary
elements are 'undefined', and the details elements don't open
automatically. Suggest linking to ARIA draft, i.e.
https://w3c.github.io/aria/#link instead of
https://w3c.github.io/core-aam/#role-map-link

common/biblio.js

@@ -203,7 +203,7 @@ var biblio = {
 	},
 	"SVG2": {
 		"title": "Scalable Vector Graphics (SVG) 2",
-		"href": "http://www.w3.org/TR/2015/WD-SVG2-20150915/",
+		"href": "https://www.w3.org/TR/SVG2/",
 		"status": "WD",
 		"publisher": "W3C",
 		"authors": [