Fix copy'n'paste error in tests (#97)

* Fix copy'n'paste error in tests.

* Fixed bad space.

Author: felixfontein

.github/workflows/test-action-build-html.yml

@@ -50,7 +50,7 @@ jobs:
         run: |
           import os
 
-          expected_hash = os.environ['ARTIFACT_HASH']
+          expected_hash = os.environ['EXPECTED_HASH']
           output_hash = os.environ['OUTPUT_HASH']
           output_build_html = os.environ['OUTPUT_BUILD_HTML']
           artifact_hash = os.environ['ARTIFACT_HASH']
@@ -226,7 +226,7 @@ jobs:
         run: |
           import os
 
-          expected_hash = os.environ['expected_hash ']
+          expected_hash = os.environ['expected_hash']
           output_hash = os.environ['output_hash']
           output_build_html = os.environ['output_build_html']
           artifact_hash = os.environ['artifact_hash']