bug #10212 Update UPGRADE-1.3.md diff link (oallain)
bug #10212 Update UPGRADE-1.3.md diff link (oallain)

This PR was merged into the 1.3-dev branch.

Discussion
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`package.json` diff link and `.babelrc` diff link are reversed

| Q               | A
| --------------- | -----
| Branch?         | 1.3
| Bug fix?        | no
| New feature?    | no
| BC breaks?      | no
| Deprecations?   | no
| Related tickets | Doc error
| License         | MIT

Just a small mistake in the UPGRADE-1.3.md file.
Diff links are inversed ;)

Commits
-------

bbb97b4262e4f06652964ae535682daedce09c15 Update UPGRADE-1.3.md diff link

GSadee/Sylius,bitbager/Sylius,diimpp/Sylius,Brille24/Sylius,antonioperic/Sylius,kayue/Sylius,lchrusciel/Sylius,kayue/Sylius,foobarflies/Sylius,Brille24/Sylius,kayue/Sylius,pjedrzejewski/Sylius,Arminek/Sylius,itinance/Sylius,101medialab/Sylius,Brille24/Sylius,pamil/Sylius,SyliusBot/Sylius,mbabker/Sylius,bitbager/Sylius,Sylius/Sylius,mbabker/Sylius,diimpp/Sylius,loic425/Sylius,diimpp/Sylius,101medialab/Sylius,Brille24/Sylius,antonioperic/Sylius,loic425/Sylius,itinance/Sylius,foobarflies/Sylius,pjedrzejewski/Sylius,bitbager/Sylius,Arminek/Sylius,SyliusBot/Sylius,Zales0123/Sylius,SyliusBot/Sylius,Zales0123/Sylius,lchrusciel/Sylius,mbabker/Sylius,Zales0123/Sylius,antonioperic/Sylius,lchrusciel/Sylius,GSadee/Sylius,foobarflies/Sylius,pjedrzejewski/Sylius,itinance/Sylius,Arminek/Sylius,itinance/Sylius,GSadee/Sylius,mbabker/Sylius,foobarflies/Sylius,bitbager/Sylius,loic425/Sylius,pjedrzejewski/Sylius,Sylius/Sylius,pamil/Sylius,Sylius/Sylius,101medialab/Sylius,pamil/Sylius