docs(layout): Updating allowed values
docs(layout): Updating allowed values

Update flex allowed values in layout-introduction doc. Flex should include 100/3 and 200/3. Flex-offset should not include 100%. Based on classes created in layout.scss, and testing performed in layout.spec.js

Closes #8093

acoreyj/material,david-gang/material,oostmeijer/material,epelc/material,dmitriz/material,crisbeto/material,marekmicek/material,HipsterZipster/material,HipsterZipster/material,j3ski/material,graingert/material,imjoeco/material,pwistbac/material,programmist/material,acoreyj/material,SamDLT/material,hayloft/material,hodeyp/material,colinskow/material,dmitriz/material,ServiceManagementGroup/material,graingert/material,graingert/material,j3ski/material,profoundry-us/material,pwistbac/material,ilovett/material,david-gang/material,welkinhealth/material,david-gang/material,ServiceManagementGroup/material,angular/material,hayloft/material,Splaktar/material,hayloft/material,epelc/material,HipsterZipster/material,acoreyj/material,welkinhealth/material,HarrisCorp/material,imjoeco/material,ServiceManagementGroup/material,vertazzar/material,ilovett/material,hodeyp/material,colinskow/material,Frank3K/material,marekmicek/material,vertazzar/material,programmist/material,bluebirdtech/material,gkalpak/material,angular/material,miguelcobain/material,ilovett/material,gkalpak/material,Splaktar/material,acoreyj/material,ErinCoughlan/material,HipsterZipster/material,angular/material,colinskow/material,bluebirdtech/material,crisbeto/material,crisbeto/material,daniel-nagy/material,oostmeijer/material,dmitriz/material,Frank3K/material,welkinhealth/material,ErinCoughlan/material,gkalpak/material,oostmeijer/material,programmist/material,oostmeijer/material,DevVersion/material,bluebirdtech/material,clshortfuse/material,imjoeco/material,hayloft/material,epelc/material,hodeyp/material,daniel-nagy/material,Splaktar/material,daniel-nagy/material,ServiceManagementGroup/material,daniel-nagy/material,welkinhealth/material,ilovett/material,DevVersion/material,david-gang/material,HarrisCorp/material,marekmicek/material,ErinCoughlan/material,imjoeco/material,gkalpak/material,Splaktar/material,hodeyp/material,epelc/material,vertazzar/material,j3ski/material,angular/material,marekmicek/material,ErinCoughlan/material,HarrisCorp/material,programmist/material,HarrisCorp/material,pwistbac/material,SamDLT/material,DevVersion/material,DevVersion/material,clshortfuse/material,dmitriz/material,bluebirdtech/material,crisbeto/material,SamDLT/material,miguelcobain/material,miguelcobain/material,clshortfuse/material,colinskow/material,graingert/material,profoundry-us/material,vertazzar/material,miguelcobain/material,pwistbac/material,clshortfuse/material,profoundry-us/material,j3ski/material,profoundry-us/material,SamDLT/material,Frank3K/material,Frank3K/material