JS: Rename getAUseSite -> getRouteInstallation

javascript/ql/lib/semmle/javascript/Routing.qll

@@ -277,7 +277,7 @@ module Routing {
     }
 
     /** Gets a place where this route node is installed as a route handler. */
-    Node getAUseSite() {
+    Node getRouteInstallation() {
       result = getAUseSiteInRouteSetup()
       or
       not exists(getAUseSiteInRouteSetup()) and

javascript/ql/src/Security/CWE-770/MissingRateLimiting.ql

@@ -22,7 +22,7 @@ from
   Routing::Node useSite, ExpensiveRouteHandler r, string explanation, DataFlow::Node reference,
   string referenceLabel
 where
-  useSite = Routing::getNode(r).getAUseSite() and
+  useSite = Routing::getNode(r).getRouteInstallation() and
   r.explain(explanation, reference, referenceLabel) and
   not useSite.isGuardedByNode(any(RateLimitingMiddleware m).getRoutingNode())
 select useSite, "This route handler " + explanation + ", but is not rate-limited.", reference,