Typo in "Reliable data transfer on top of an imperfect link"

[uniqueness-template]

http://cnp3book.info.ucl.ac.be/2nd/html/principles/reliability.html#reliable-data-transfer-on-top-of-an-imperfect-link

A first glance, loosing frames might seem strange on single link.

should be:

A first glance, losing frames might seem strange on single link.

[obonaventure]

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