[sphinxcontrib-httpdomain] Homogenize recipe installation

conda/sphinxcontrib-httpdomain/meta.yaml

@@ -11,7 +11,7 @@ source:
 
 build:
   number: 0
-  script: python -m pip install --no-deps --ignore-installed .
+  script: "{{ PYTHON }} -m pip install --no-deps --ignore-installed --no-cache-dir ."
 
 requirements:
   host:
@@ -24,7 +24,7 @@ requirements:
 
 test:
   imports:
-    - sphinxcontrib
+    - sphinxcontrib.httpdomain
 
 about:
   home: https://github.com/sphinx-contrib/httpdomain