test: align test descriptions between main and native test files

---
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: passed
  - task: lint_javascript_benchmarks
    status: na
  - 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
---

Author: Planeshifter

lib/node_modules/@stdlib/stats/base/dists/logistic/mean/test/test.native.js

@@ -81,7 +81,7 @@ tape( 'if provided a nonpositive `s`, the function returns `NaN`', opts, functio
 	t.end();
 });
 
-tape( 'the function returns the mean of a logistic distribution', opts, function test( t ) {
+tape( 'the function returns the expected value of a logistic distribution', opts, function test( t ) {
 	var expected;
 	var mu;
 	var s;

lib/node_modules/@stdlib/stats/base/dists/poisson/mean/test/test.native.js

@@ -68,7 +68,7 @@ tape( 'if provided a mean parameter `lambda` less than `0`, the function returns
 	t.end();
 });
 
-tape( 'the function returns the mean of a Poisson distribution', opts, function test( t ) {
+tape( 'the function returns the expected value of a Poisson distribution', opts, function test( t ) {
 	var expected;
 	var lambda;
 	var delta;

lib/node_modules/@stdlib/stats/base/dists/triangular/stdev/test/test.native.js

@@ -80,7 +80,7 @@ tape( 'if provided parameters not satisfying `a <= c <= b`, the function returns
 	t.end();
 });
 
-tape( 'the function returns the stdev of a triangular distribution', opts, function test( t ) {
+tape( 'the function returns the standard deviation of a triangular distribution', opts, function test( t ) {
 	var expected;
 	var delta;
 	var tol;