README.md - fix

[mishrasamiksha]

Update typo error from "accross" to "across"

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• Changes have been tested
  • Covered in automated test suite
  • Manual test case recorded
• Change-type present on at least one commit
• Signed-off-by is present
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[resin-jenkins]

Can one of the admins verify this patch?

[alexgg]

hey @mishrasamiksha thanks for the fix - the commit will need a Change-type: patch in the footer to merge though.