Be more explicit about using Jinja for templates

Signed-off-by: Pedro Algarvio <palgarvio@vmware.com>

.github/workflows/ci.yml

@@ -1,5 +1,5 @@
 # Do not edit these workflows directly as the changes made will be overwritten.
-# Instead, edit the template '.github/workflows/templates/ci.yml.j2'
+# Instead, edit the template '.github/workflows/templates/ci.yml.jinja'
 ---
 name: CI
 on:

.github/workflows/nightly.yml

@@ -1,5 +1,5 @@
 # Do not edit these workflows directly as the changes made will be overwritten.
-# Instead, edit the template '.github/workflows/templates/nightly.yml.j2'
+# Instead, edit the template '.github/workflows/templates/nightly.yml.jinja'
 ---
 name: Nightly
 

.github/workflows/scheduled.yml

@@ -1,5 +1,5 @@
 # Do not edit these workflows directly as the changes made will be overwritten.
-# Instead, edit the template '.github/workflows/templates/scheduled.yml.j2'
+# Instead, edit the template '.github/workflows/templates/scheduled.yml.jinja'
 ---
 name: Scheduled
 

.github/workflows/templates/ci.yml.jinja

@@ -1,4 +1,4 @@
-<%- extends 'layout.yml.j2' %>
+<%- extends 'layout.yml.jinja' %>
 <%- set pre_commit_version = "3.0.4" %>
 
 <%- block on %>

.github/workflows/templates/nightly.yml.jinja

@@ -1,5 +1,5 @@
 <%- set gh_environment = gh_environment|default("nightly") %>
-<%- extends 'ci.yml.j2' %>
+<%- extends 'ci.yml.jinja' %>
 
 <%- block on %>
 

.github/workflows/templates/scheduled.yml.jinja

@@ -1,4 +1,4 @@
-<%- extends 'ci.yml.j2' %>
+<%- extends 'ci.yml.jinja' %>
 
 <%- block on %>
 

tools/pre_commit.py

@@ -79,7 +79,7 @@ def generate_workflows(ctx: Context):
         template: str = cast(str, details["template"])
         includes: dict[str, bool] = cast(dict, details.get("includes") or {})
         workflow_path = WORKFLOWS / template
-        template_path = TEMPLATES / f"{template}.j2"
+        template_path = TEMPLATES / f"{template}.jinja"
         ctx.info(
             f"Generating '{workflow_path.relative_to(REPO_ROOT)}' from "
             f"template '{template_path.relative_to(REPO_ROOT)}' ..."
@@ -94,7 +94,7 @@ def generate_workflows(ctx: Context):
         if workflow_name == "Check Workflow Run":
             check_workflows = [wf for wf in sorted(workflows) if wf != workflow_name]
             context["check_workflows"] = check_workflows
-        loaded_template = env.get_template(f"{template}.j2")
+        loaded_template = env.get_template(template_path.name)
         rendered_template = loaded_template.render(**context)
         workflow_path.write_text(rendered_template.rstrip() + "\n")