Fix Chrome extension version number.

It was wrong because we did not use the modified files in tmp/
Also rename the unsigned Firefox extensions as .zip instead of .xpi

scripts/package_chrome_extension.sh

@@ -12,7 +12,9 @@ while getopts tdv: option; do
 done
 
 echo "Packaging unsigned Chrome extension, version $VERSION"
-zip -r build/kiwix-chrome-unsigned-extension-$VERSION.zip www webextension manifest.json LICENSE-GPLv3.txt service-worker.js README.md
+cd tmp
+zip -r ../build/kiwix-chrome-unsigned-extension-$VERSION.zip www webextension manifest.json LICENSE-GPLv3.txt service-worker.js README.md
+cd ..
 if [ "${TAG}zz" == "zz" ]; then
     # Package the extension with Chromium, if we're not packaging a public version
     echo "Signing the extension for Chrome with a local Chromium, version $VERSION"

scripts/package_firefox_extension.sh

@@ -19,7 +19,7 @@ fi
 cd tmp
 if [ "${TAG}zz" == "zz" ]; then
     echo "Packaging unsigned Firefox extension, version $VERSION"
-    zip -r ../build/kiwix-firefox-unsigned-extension-$VERSION.xpi www webextension manifest.json LICENSE-GPLv3.txt service-worker.js README.md
+    zip -r ../build/kiwix-firefox-unsigned-extension-$VERSION.zip www webextension manifest.json LICENSE-GPLv3.txt service-worker.js README.md
 
     if [ "${DRYRUN}zz" == "zz" ]; then
         # Sign the extension with the Mozilla API through web-ext, if we're not packaging a public version
@@ -56,6 +56,6 @@ else
     sed -i -e "s/[email protected]/[email protected]/" manifest.json
 
     echo "Packaging unsigned 'listed' Firefox extension, version $VERSION"
-    zip -r ../build/kiwix-firefox-unsigned-listed-extension-$VERSION.xpi www webextension manifest.json LICENSE-GPLv3.txt service-worker.js README.md
+    zip -r ../build/kiwix-firefox-unsigned-listed-extension-$VERSION.zip www webextension manifest.json LICENSE-GPLv3.txt service-worker.js README.md
     echo "This unsigned extension must be manually uploaded to Mozilla to be signed and distributed from their store"
 fi