[DOCS] A typo fixed in impala_shell_running_commands
[DOCS] A typo fixed in impala_shell_running_commands

Change-Id: I5bbc738e6183c7f5de8809d3cb0a004bb1f01c63
Reviewed-on: http://gerrit.cloudera.org:8080/10894
Reviewed-by: Alex Rodoni <b46da68bf9b818cec7052f7cdfe9b3e69485676b@cloudera.com>
Tested-by: Impala Public Jenkins <039b6b20426ff68ebe492b3021890d8c8fd010c9@cloudera.com>

cloudera/Impala,cloudera/Impala,cloudera/Impala,cloudera/Impala,cloudera/Impala,cloudera/Impala,cloudera/Impala