Update source-code-page-code-scroll.goml GUI test

Author: GuillaumeGomez

tests/rustdoc-gui/source-code-page-code-scroll.goml

@@ -2,7 +2,7 @@
 go-to: "file://" + |DOC_PATH| + "/src/test_docs/lib.rs.html"
 set-window-size: (800, 1000)
 // "scrollWidth" should be superior than "clientWidth".
-assert-property: ("body", {"scrollWidth": 1047, "clientWidth": 800})
+assert-property: ("body", {"scrollWidth": 1114, "clientWidth": 800})
 
 // Both properties should be equal (ie, no scroll on the code block).
-assert-property: (".example-wrap .rust", {"scrollWidth": 933, "clientWidth": 933})
+assert-property: (".example-wrap .rust", {"scrollWidth": 1000, "clientWidth": 1000})