Fix typos in fixups.md

[timhunt]

Fix my own typos

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URL	Performance	Accessibility	Best Practices	SEO	PWA	Report
/	🟠 51	🟢 95	🟢 100	🟢 90	🟢 100	Report
/docs/5.0/apis/commonfiles	🔴 44	🟢 93	🟢 100	🟢 100	🟢 100	Report
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[sarjona]

Hi @timhunt!
Thanks for fixing these typos. Well spotted! <3