docs(codepen): update the asset cache file name
docs(codepen): update the asset cache file name

As introduced in d8602747f597879532ff2d1bb23c7a9bec6e6b88, the filename of the asset cache changed.
This commit updates the `codepen` guide, to use the new filename.

Closes #7446

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