Fix building docs

lib/spack/docs/conf.py

@@ -76,7 +76,14 @@
     "--output-dir=.",  # Directory to place all output
     "--module-first",  # emit module docs before submodule docs
 ]
-sphinx_apidoc(apidoc_args + ["_spack_root/lib/spack/spack"])
+sphinx_apidoc(
+    apidoc_args
+    + [
+        "_spack_root/lib/spack/spack",
+        "_spack_root/lib/spack/spack/test/*.py",
+        "_spack_root/lib/spack/spack/test/cmd/*.py",
+    ]
+)
 sphinx_apidoc(apidoc_args + ["_spack_root/lib/spack/llnl"])
 
 # Enable todo items

lib/spack/docs/developer_guide.rst

@@ -232,7 +232,7 @@ Spack Subcommands
 Unit tests
 ^^^^^^^^^^
 
-:mod:`spack.test`
+``spack.test``
   Implements Spack's test suite.  Add a module and put its name in
   the test suite in ``__init__.py`` to add more unit tests.