api/projects: fix environments API endpoint

CHANGELOG.md

@@ -15,6 +15,11 @@ parameters was also implemented.
 Some additional merge status names for merge requests were missing and have
 been added.
 
+## Fixes
+
+  * The `api::projects::environments::Environment` endpoint uses the correct
+    path now.
+
 # v0.1210.1
 
 ## New API strategy

src/api/projects/environments/environment.rs

@@ -34,7 +34,11 @@ impl<'a> Endpoint for Environment<'a> {
     }
 
     fn endpoint(&self) -> Cow<'static, str> {
-        format!("projects/{}/environment/{}", self.project, self.environment).into()
+        format!(
+            "projects/{}/environments/{}",
+            self.project, self.environment,
+        )
+        .into()
     }
 }