Fix wrong variable name in script (#7344)

Yeah, dynamic programming language... ;-P
diff --git a/build_tools/benchmarks/run_benchmarks_on_android.py b/build_tools/benchmarks/run_benchmarks_on_android.py
index 0271a72..367e6fb 100755
--- a/build_tools/benchmarks/run_benchmarks_on_android.py
+++ b/build_tools/benchmarks/run_benchmarks_on_android.py
@@ -337,7 +337,7 @@
 
     # If we have a tracing-enabled benchmark tool and the capture collecting
     # tool, catpure a trace of the benchmark run.
-    catpure_filename = None
+    capture_filename = None
     if traced_benchmark_tool is not None and trace_capture_tool is not None:
       run_cmd = [
           "TRACY_NO_EXIT=1", "taskset",