chore: limit the spellchecking to a fixed list of directories

Signed-off-by: Jonathan Gonzalez V. <jonathan.gonzalez@enterprisedb.com>

Author: sxd

.spellcheck.yaml

@@ -2,7 +2,8 @@ matrix:
 - name: Markdown
   sources:
   # Ignore the CHANGELOG.md file, it is autogenerated
-  - ./**/*.md|!./CHANGELOG.md
+  - ./*.md|!./CHANGELOG.md
+  - ./web/docs/**/*.md
   dictionary:
     wordlists:
     - .wordlist.txt