Fix overlong lines

.github/workflows/main.yml

@@ -122,7 +122,7 @@ jobs:
       - name: Extract TeX files
         run: make base
       - name: Run explcheck
-        run: explcheck --warnings-are-errors -- *.tex *.sty
+        run: explcheck --warnings-are-errors --max-line-length=72 -- *.tex *.sty
   markdownlint:
     name: Style check (Markdown)
     runs-on: ubuntu-latest

markdown.dtx

@@ -35216,7 +35216,8 @@ end
       {
         \markdownWarning
           {
-            The~theme~name~"witiko/dot"~has~been~soft-deprecated. \iow_newline:
+            The~theme~name~"witiko/dot"~has~been~soft-deprecated.
+            \iow_newline:
             Consider~changing~the~name~to~"witiko/diagrams@v1".
           }
       }
@@ -35331,10 +35332,11 @@ end
           {
             \markdownWarning
               {
-                Write~"witiko/diagrams@v1"~to~pin~version~"v1"~of~the~theme~
-                "witiko/diagrams".~This~will~keep~your~documents~from~suddenly~
-                breaking~when~we~have~released~future~versions~of~the~theme~with~
-                backwards-incompatible~syntax~and~behavior.
+                Write~"witiko/diagrams@v1"~to~pin~version~"v1"~of~the~
+                theme~"witiko/diagrams".~This~will~keep~your~documents~
+                from~suddenly~breaking~when~we~have~released~future~
+                versions~of~the~theme~with~backwards-incompatible~
+                syntax~and~behavior.
               }
             \markdownSetup
               {
@@ -35574,9 +35576,9 @@ end
       {
         \markdownWarning
           {
-            The~theme~witiko/example/#1~is~supposed~to~be~used~in~code~examples.~
-            Using~it~in~actual~code~has~no~effect,~except~this~warning~message,~
-            and~is~usually~a~mistake.
+            The~theme~witiko/example/#1~is~supposed~to~be~used~in~code~
+            examples.~Using~it~in~actual~code~has~no~effect,~except~
+            this~warning~message,~and~is~usually~a~mistake.
           }
       }
   }