use Jinja name consistently

src/flask/sansio/app.py

@@ -521,7 +521,7 @@ class App(Scaffold):
         return os.path.join(prefix, "var", f"{self.name}-instance")
 
     def create_global_jinja_loader(self) -> DispatchingJinjaLoader:
-        """Creates the loader for the Jinja2 environment.  Can be used to
+        """Creates the loader for the Jinja environment.  Can be used to
         override just the loader and keeping the rest unchanged.  It's
         discouraged to override this function.  Instead one should override
         the :meth:`jinja_loader` function instead.

src/flask/templating.py

@@ -37,7 +37,7 @@ def _default_template_ctx_processor() -> dict[str, t.Any]:
 
 
 class Environment(BaseEnvironment):
-    """Works like a regular Jinja2 environment but has some additional
+    """Works like a regular Jinja environment but has some additional
     knowledge of how Flask's blueprint works so that it can prepend the
     name of the blueprint to referenced templates if necessary.
     """