Change status of intra broker balancing from beta to GA#855

kbatuigas merged 4 commits intov-WIP/24.3redpanda-data/docs:v-WIP/24.3from

DOC-673-Change-status-of-intra-broker-balancing-from-beta-to-GAredpanda-data/docs:DOC-673-Change-status-of-intra-broker-balancing-from-beta-to-GACopy head branch name to clipboard