Update scripts/prepare-doc.sh

Co-authored-by: Ben Boeckel <mathstuf@users.noreply.github.com>

Author: utkarshayachit

scripts/prepare-doc.sh

@@ -63,7 +63,7 @@ ls -d */ | cut -d "/"  -f 1 > versions
 if [ "$PARAVIEW_DOC_UPLOAD" = "true" ]; then
     cd "${WORK_DIR}/paraview-docs/"
     git add "$VERSION"
-    # we simply ammend the last commit and force-push
+    # we simply amend the last commit and force-push
     git commit -a --amend -m "Update documentation for version $VERSION"
     git push origin gh-pages -f
 fi