### What this PR does / why we need it? his PR fixes a typo in two function names in the `epd_load_balance_proxy_layerwise_server_example.py` example script. The function names `aquire_aborted_pd_requests` and `aquire_aborted_prefiller_requests` were misspelled and have been corrected to `acquire_aborted_pd_requests` and `acquire_aborted_prefiller_requests` respectively. This improves code readability and correctness. Signed-off-by: Ronald1995 <ronaldautomobile@163.com>