Fixes bash error in run_benchmarks.sh script. (#4498)

(cherry picked from commit 6232299e7759d24c58150bfbbb13ce64e0d763cb)
diff --git a/ci/scripts/run_benchmarks.sh b/ci/scripts/run_benchmarks.sh
index ae18968..b17546e 100755
--- a/ci/scripts/run_benchmarks.sh
+++ b/ci/scripts/run_benchmarks.sh
@@ -41,7 +41,7 @@
 GEODE_SHA=$(git rev-parse --verify HEAD)
 popd
 
-input= "$(pwd)/results/failedTests"
+input="$(pwd)/results/failedTests"
 
 pushd geode-benchmarks/infrastructure/scripts/aws/
 ./launch_cluster.sh -t ${CLUSTER_TAG} -c ${CLUSTER_COUNT} --ci