doc(button): fix typos in documentation for the 'a' tag
doc(button): fix typos in documentation for the 'a' tag

Closes #8028.

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