dev/core#403 Fix Petition Confirmation Email template by removing the…

[seamuslee001]

… trailing space on the confirmation url from the href tag

Overview

This fixes a silent bug found because the href tag contains a trailing white space

Before

URL doesn't work unless copied into the browser because of a trailing white space

After

No trailing whitespace

@eileenmcnaughton this should be a pretty easy one to review

[civibot]

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[eileenmcnaughton]

OK, makes sense