[FLINK-29306][shell] Fix the error detection of multiple flink-dist-*.jar for config.sh
[FLINK-29306][shell] Fix the error detection of multiple flink-dist-*.jar for config.sh

apache/flink,wwjiang007/flink,apache/flink,wwjiang007/flink,wwjiang007/flink,lincoln-lil/flink,apache/flink,lincoln-lil/flink,lincoln-lil/flink,apache/flink,lincoln-lil/flink,wwjiang007/flink,wwjiang007/flink,apache/flink,wwjiang007/flink,apache/flink,lincoln-lil/flink,wwjiang007/flink,apache/flink,lincoln-lil/flink,lincoln-lil/flink