Only use ascii characters in perf test names. (#1718)
Only use ascii characters in perf test names. (#1718)

Motivation:

Many other systems don't like non ascii characters.

Modifications:

Change a letter 'a' to a letter 'a' but with a more normal encoding.

Result:

Test names should be in ascii
apple/swift-nio,apple/swift-nio,apple/swift-nio,apple/swift-nio,apple/swift-nio