migration: mention `.form-text` changes (#32911)
migration: mention `.form-text` changes (#32911)

see #30598 and #30565
GerHobbelt/bootstrap,coliff/bootstrap,inway/bootstrap,m5o/bootstrap,tjkohli/bootstrap,inway/bootstrap,tjkohli/bootstrap,coliff/bootstrap,GerHobbelt/bootstrap,GerHobbelt/bootstrap,m5o/bootstrap,twbs/bootstrap,twbs/bootstrap,inway/bootstrap