.pre-commit-config.yaml: remove markdown exclusion of trailing-whitespace

.pre-commit-config.yaml

@@ -27,11 +27,15 @@ repos:
         exclude: .*\.nginx$
       - id: fix-byte-order-marker
       - id: trailing-whitespace
+        # Markdown allows double trailing space for forced line change. The
+        # hook appears to remove single ones.
         args: ["--markdown-linebreak-ext", "md,markdown"]
         # Let's not touch LICENSE files or reuse.software directory
         exclude: ^LICENSES\/.*|LICENSE$
-        # File types depending on trailing whitespace. Use identify-cli
-        exclude_types: [svg, markdown, tsv]
+        # Other file extensions where trailing whitespace may be intentional
+        # and lack of it break things. Use identify-cli for figuring out more
+        # types to add.
+        exclude_types: [svg, tsv]
       #- id: check-docstring-first
       #- id: check-json
       - id: check-merge-conflict