Update release list test

Author: GuillaumeGomez

src/web/rustdoc.rs

@@ -2240,12 +2240,8 @@ mod test {
                 .create()?;
 
             // test rustdoc pages stay on the documentation
-            let page = kuchiki::parse_html().one(
-                env.frontend()
-                    .get("/hexponent/0.3.0/hexponent/")
-                    .send()?
-                    .text()?,
-            );
+            let page = kuchiki::parse_html()
+                .one(env.frontend().get("/hexponent/releases").send()?.text()?);
             let selector =
                 r#"ul > li a[href="/crate/hexponent/0.3.1/target-redirect/hexponent/index.html"]"#
                     .to_string();