typo fixes

adapter-s4j/src/main/java/io/nosqlbench/adapter/s4j/util/S4JAdapterMetrics.java

@@ -54,7 +54,7 @@ public class S4JAdapterMetrics  {
         this.executeTimer = s4jBaseOpDispenser.create().timer(
             "s4j_execute",
             MetricCategory.Driver,
-            "S4j execut timer"
+            "S4j execute timer"
         );
     }
 

engine-core/src/main/java/io/nosqlbench/engine/api/activityapi/core/ComponentActivityInstrumentation.java

@@ -91,7 +91,7 @@ public class ComponentActivityInstrumentation implements ActivityInstrumentation
                 "cycles" + ComponentActivityInstrumentation.RESPONSE_TIME,
                 hdrdigits,
                 MetricCategory.Core,
-                "response timer for a cycle, including all of bind, execut, result and result_success;" +
+                "response timer for a cycle, including all of bind, execute, result and result_success;" +
                     " response timers include scheduling delays which occur when an activity falls behind its target rate"
             );
         }