SCSSLintBear: Update docstring parameter
SCSSLintBear: Update docstring parameter

allow_important_rule_in_property
to
allow_important_rule_in_properties
So that the documentation matches the actual tag that is used.

Closes https://github.com/coala/coala-bears/issues/1744

aptrishu/coala-bears,aptrishu/coala-bears,refeed/coala-bears,shreyans800755/coala-bears,coala-analyzer/coala-bears,Vamshi99/coala-bears,coala-analyzer/coala-bears,yash-nisar/coala-bears,refeed/coala-bears,shreyans800755/coala-bears,coala/coala-bears,refeed/coala-bears,refeed/coala-bears,shreyans800755/coala-bears,yash-nisar/coala-bears,aptrishu/coala-bears,yash-nisar/coala-bears,ankit01ojha/coala-bears,shreyans800755/coala-bears,aptrishu/coala-bears,coala/coala-bears,yash-nisar/coala-bears,coala/coala-bears,yash-nisar/coala-bears,refeed/coala-bears,ankit01ojha/coala-bears,Vamshi99/coala-bears,damngamerz/coala-bears,shreyans800755/coala-bears,aptrishu/coala-bears,yash-nisar/coala-bears,damngamerz/coala-bears,ankit01ojha/coala-bears,coala/coala-bears,Vamshi99/coala-bears,srisankethu/coala-bears,coala/coala-bears,srisankethu/coala-bears,refeed/coala-bears,shreyans800755/coala-bears,Vamshi99/coala-bears,srisankethu/coala-bears,yash-nisar/coala-bears,ankit01ojha/coala-bears,damngamerz/coala-bears,coala-analyzer/coala-bears,damngamerz/coala-bears,coala/coala-bears,refeed/coala-bears,Vamshi99/coala-bears,damngamerz/coala-bears,refeed/coala-bears,Vamshi99/coala-bears,srisankethu/coala-bears,coala-analyzer/coala-bears,coala/coala-bears,coala-analyzer/coala-bears,aptrishu/coala-bears,yash-nisar/coala-bears,damngamerz/coala-bears,srisankethu/coala-bears,ankit01ojha/coala-bears,ankit01ojha/coala-bears,ankit01ojha/coala-bears,srisankethu/coala-bears,srisankethu/coala-bears,ankit01ojha/coala-bears,srisankethu/coala-bears,refeed/coala-bears,damngamerz/coala-bears,coala-analyzer/coala-bears,Vamshi99/coala-bears,ankit01ojha/coala-bears,yash-nisar/coala-bears,yash-nisar/coala-bears,aptrishu/coala-bears,coala-analyzer/coala-bears,srisankethu/coala-bears,damngamerz/coala-bears,ankit01ojha/coala-bears,coala-analyzer/coala-bears,coala-analyzer/coala-bears,damngamerz/coala-bears,coala/coala-bears,aptrishu/coala-bears,refeed/coala-bears,srisankethu/coala-bears,aptrishu/coala-bears,yash-nisar/coala-bears,aptrishu/coala-bears,Vamshi99/coala-bears,ankit01ojha/coala-bears,shreyans800755/coala-bears,srisankethu/coala-bears,Vamshi99/coala-bears,shreyans800755/coala-bears,damngamerz/coala-bears,coala/coala-bears,damngamerz/coala-bears,shreyans800755/coala-bears,aptrishu/coala-bears,coala/coala-bears,Vamshi99/coala-bears,coala/coala-bears,shreyans800755/coala-bears,shreyans800755/coala-bears,refeed/coala-bears,coala/coala-bears,Vamshi99/coala-bears