Add docs/requirements.txt

tekktrik · web-flow · commit 3a63fa425fdd · 2022-05-16T11:20:15.000-04:00
Noticed the docs were failing to build because `docs/requirements.txt` didn't exist
diff --git a/docs/requirements.txt b/docs/requirements.txt
@@ -0,0 +1,5 @@
+# SPDX-FileCopyrightText: 2021 Kattni Rembor for Adafruit Industries
+#
+# SPDX-License-Identifier: Unlicense
+
+sphinx>=4.0.0
