bench: fix assertion

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: na
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: na
  - task: lint_javascript_benchmarks
    status: passed
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

---
type: pre_push_report
description: Results of running various checks prior to pushing changes.
report:
  - task: run_javascript_examples
    status: passed
  - task: run_c_examples
    status: skipped
  - task: run_cpp_examples
    status: na
  - task: run_javascript_readme_examples
    status: passed
  - task: run_c_benchmarks
    status: skipped
  - task: run_cpp_benchmarks
    status: na
  - task: run_fortran_benchmarks
    status: na
  - task: run_javascript_benchmarks
    status: passed
  - task: run_julia_benchmarks
    status: na
  - task: run_python_benchmarks
    status: na
  - task: run_r_benchmarks
    status: na
  - task: run_javascript_tests
    status: passed
---

Author: kgryte

lib/node_modules/@stdlib/ndarray/base/unary-accumulate/benchmark/benchmark.2d_rowmajor_accessors_complex.js

@@ -119,7 +119,7 @@ function createBenchmark( len, shape, xtype ) {
 			}
 		}
 		b.toc();
-		if ( isComplex64( out ) ) {
+		if ( !isComplex64( out ) ) {
 			b.fail( 'should return a complex number' );
 		}
 		b.pass( 'benchmark finished' );