CI/spellcheck: build curl.1 and spellcheck it

Added acceptable words

Closes #11562

.github/workflows/spellcheck.yml

@@ -36,6 +36,12 @@ jobs:
     - name: install pandoc
       run: sudo apt-get install pandoc
 
+    - name: build curl.1
+      run: |
+         autoreconf -fi
+         ./configure --without-ssl
+         make -C docs
+
     - name: strip "uncheckable" sections from .3 pages
       run: find docs -name "*.3" -size +40c | sed 's/\.3//' | xargs -t -n1 -I OO  ./.github/scripts/cleanspell.pl OO.3 OO.33
 
@@ -45,6 +51,12 @@ jobs:
     - name: convert .1 man pages to markdown
       run: find docs -name "*.1" -size +40c | sed 's/\.1//' | xargs -t -n1 -I OO pandoc OO.1 -o OO.md
 
+    - name: trim the curl.1 markdown file
+      run: |
+        perl -pi -e 's/^    .*//' docs/curl.md
+        perl -pi -e 's/--[a-z0-9-]*//ig' docs/curl.md
+        perl -pi -e 's!https://[a-z0-9%/.-]*!!ig' docs/curl.md
+
     - name: setup the custom wordlist
       run: grep -v '^#' .github/scripts/spellcheck.words >  wordlist.txt