Fix missing tempalte

ctff/part.py

@@ -27,7 +27,7 @@ def render(self) -> str:
 class TextSubmissionPart(TemplatePart):
     """Submit a text form."""
 
-    template_name = "parts/text_submission.html"
+    template_name = "challenge_parts/text_submission.html"
 
     def __init__(self, name: str) -> None:
         self.name = name

ctff/templates/challenge_parts/text_submission.html

@@ -0,0 +1,17 @@
+ <form method="POST" enctype="multipart/form-data">
+    {% with messages = get_flashed_messages(with_categories=true) %}
+      {% if messages %}
+        {% for category, message in messages %}
+            {% if category == "flag" %}
+                <div class="alert alert-primary">{{ message }}</div>
+            {% else %}
+                <div class="alert alert-{{ category }}">{{ message }}</div>
+            {% endif %}
+        {% endfor %}
+      {% endif %}
+    {% endwith %}
+    <label>Please enter your {{ part.name }} here:</label>
+    <textarea class="form-control" name="{{ part.name }}"></textarea>
+    <br>
+    <input class="btn btn-success" type="submit" value="Submit {{ part.name }}">
+</form>