docs(material/progress-bar) : improve wording for buffer & query modes (#20093)
docs(material/progress-bar) : improve wording for buffer & query modes (#20093)

Fixes #19817


DevVersion/material2,angular/components,josephperrott/material2,andrewseguin/material2,DevVersion/material2,mmalerba/material2,andrewseguin/material2,angular/components,DevVersion/material2,crisbeto/material2,crisbeto/material2,andrewseguin/material2,mmalerba/material2,DevVersion/material2,mmalerba/material2,josephperrott/material2,josephperrott/material2,mmalerba/material2,angular/components,mmalerba/material2,andrewseguin/material2,crisbeto/material2,josephperrott/material2,andrewseguin/material2,angular/components,DevVersion/material2,crisbeto/material2,josephperrott/material2