Fix top-level examples in push.go.

As mentioned in the func doc for New(): "However, do not include the “/metrics/jobs/…” part."

Signed-off-by: eduarrrd <eduarrrd@users.noreply.github.com>

prometheus/push/push.go

@@ -16,10 +16,10 @@
 // by using its methods, finally calling Add or Push, like this:
 //
 //	// Easy case:
-//	push.New("http://example.org/metrics", "my_job").Gatherer(myRegistry).Push()
+//	push.New("http://example.org/", "my_job").Gatherer(myRegistry).Push()
 //
 //	// Complex case:
-//	push.New("http://example.org/metrics", "my_job").
+//	push.New("http://example.org/", "my_job").
 //	    Collector(myCollector1).
 //	    Collector(myCollector2).
 //	    Grouping("zone", "xy").