easy breazy, click on Details and select Proceed anyway.
if you dont want to be nagged by this warning then you may follow this workaround albeit it is not recommended as it compromises your security.
Fire up your Chrome browser & Go to Settings.
~> Scroll to The End.
~> Press "Show Advanced Settings".
~> Then Scroll to Privacy And Untick "Protect you and your device from dangerous website".
~> Well, this Should Do The Trick.
better approach would be to add the website to exceptions or if its just a false positive then drop a report to Google Safe Browsing Team.