doc: fix typo in bbdev test guide

fixed typing error in doc/guides/tools/testbbdev.rst

Fixes: f714a18 ("app/testbbdev: add test application for bbdev")
Cc: stable@dpdk.org

Signed-off-by: Sarosh Arif <sarosh.arif@emumba.com>
Acked-by: Nicolas Chautru <nicolas.chautru@intel.com>

doc/guides/tools/testbbdev.rst

@@ -6,7 +6,7 @@ dpdk-test-bbdev Application
 
 The ``dpdk-test-bbdev`` tool is a Data Plane Development Kit (DPDK) utility that
 allows measuring performance parameters of PMDs available in the bbdev framework.
-Available tests available for execution are: latency, throughput, validation,
+Tests available for execution are: latency, throughput, validation,
 bler and sanity tests. Execution of tests can be customized using various
 parameters passed to a python running script.