fixing the notebook URI

[guilhermesilveira]

Just a simple fix on the README file

[coveralls]

Pull Request Test Coverage Report for Build 155

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 3 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.4%) to 89.196%

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Files with Coverage Reduction	New Missed Lines	%
talos/metrics/performance.py	3	83.78%

Totals
Change from base Build 151:	-0.4%
Covered Lines:	710
Relevant Lines:	796

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💛 - Coveralls

[mikkokotila]

Thanks a lot! :)