Some additives not shown, malformed knowledge panel for wikipedia abstracts

[stephanegigandet]

Describe the bug

On some pages, we don't show some additives, like E250 in French:

https://fr.openfoodfacts.org/produit/3095758049019/le-torchon-cuit-a-l-etouffee-25-de-sel-fleury-michon

There is an empty panel:

To Reproduce

https://fr.openfoodfacts.org/produit/3095758049019/le-torchon-cuit-a-l-etouffee-25-de-sel-fleury-michon

Expected behavior

All additives panels shown

Part of

• 📖 Knowledge panels (Tracker) #5493

[stephanegigandet]

This is due to some unescaped \ in the wikipedia content:

{\displaystyle \mathrm {NaNO_{3}} +\mathrm {Pb} \to \mathrm {NaNO_{2}} +\mathrm {PbO} }

[stephanegigandet]

Sometimes I feel that we should just remove the wikipedia abstracts, and have our own abstracts...

I'll remove the latex formula at least.