Update GHA build script to build autodocs

Author: CAM-Gerlach

.github/workflows/build.yaml

@@ -32,6 +32,7 @@ jobs:
     steps:
     - name: Check out repository
       uses: actions/checkout@v4
+      submodules: true
     - name: Set up Python
       uses: actions/setup-python@v5
       with:

.github/workflows/check.yaml

@@ -31,6 +31,7 @@ jobs:
     steps:
     - name: Checkout repository
       uses: actions/checkout@v4
+      submodules: true
     - name: Set up Python
       uses: actions/setup-python@v5
       with:

ci/build.sh

@@ -1,3 +1,3 @@
 #!/bin/bash -ex
 
-nox -s build
+nox -s build -- -t autodoc