Rename trigger for expectation of error from 'raise' to 'experr'

snippets/ruby.snippets

@@ -998,7 +998,7 @@ snippet exp
 	expect(${1:object}).to ${0}
 snippet expb
 	expect { ${1:object} }.to ${0}
-snippet raise
+snippet experr
 	expect { ${1:object} }.to raise_error ${2:StandardError}, /${0:message_regex}/
 snippet shared
 	shared_examples ${0:"shared examples name"}