refactor: apply suggestions from previous PRs

---
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: na
  - task: run_c_examples
    status: na
  - task: run_cpp_examples
    status: na
  - task: run_javascript_readme_examples
    status: na
  - task: run_c_benchmarks
    status: na
  - 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: na
---

---
type: pre_push_report
description: Results of running various checks prior to pushing changes.
report:
  - task: run_javascript_examples
    status: na
  - task: run_c_examples
    status: na
  - task: run_cpp_examples
    status: na
  - task: run_javascript_readme_examples
    status: na
  - task: run_c_benchmarks
    status: na
  - 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: na
---

Author: anandkaranubc

lib/node_modules/@stdlib/stats/base/dists/chisquare/kurtosis/README.md

@@ -144,7 +144,7 @@ for ( i = 0; i < 10; i++ ) {
 
 #### stdlib_base_dists_chisquare_kurtosis( k )
 
-Returns the excess kurtosis of a chi-squared distribution.
+Returns the [excess kurtosis][kurtosis] of a [chi-squared][chisquare-distribution] distribution with degrees of freedom `k`.
 
 ```c
 double out = stdlib_base_dists_chisquare_kurtosis( 9.0 );

lib/node_modules/@stdlib/stats/base/dists/chisquare/kurtosis/benchmark/benchmark.js

@@ -21,7 +21,7 @@
 // MODULES //
 
 var bench = require( '@stdlib/bench' );
-var randu = require( '@stdlib/random/base/randu' );
+var uniform = require( '@stdlib/random/base/uniform' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var EPS = require( '@stdlib/constants/float64/eps' );
 var pkg = require( './../package.json' ).name;
@@ -37,7 +37,7 @@ bench( pkg, function benchmark( b ) {
 
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
-		k = ( randu()*20.0 ) + EPS;
+		k = uniform( EPS, 20.0 );
 		y = kurtosis( k );
 		if ( isnan( y ) ) {
 			b.fail( 'should not return NaN' );

lib/node_modules/@stdlib/stats/base/dists/chisquare/kurtosis/benchmark/benchmark.native.js

@@ -23,7 +23,7 @@
 var resolve = require( 'path' ).resolve;
 var bench = require( '@stdlib/bench' );
 var Float64Array = require( '@stdlib/array/float64' );
-var randu = require( '@stdlib/random/base/randu' );
+var uniform = require( '@stdlib/random/base/uniform' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var tryRequire = require( '@stdlib/utils/try-require' );
 var pkg = require( './../package.json' ).name;
@@ -48,7 +48,7 @@ bench( pkg+'::native', opts, function benchmark( b ) {
 	len = 100;
 	k = new Float64Array( len );
 	for ( i = 0; i < len; i++ ) {
-		k[ i ] = ( randu() * 10.0 ) + 0.1; // Ensure k > 0
+		k[ i ] = uniform( 0.1, 10.0 ); // Ensure k > 0
 	}
 
 	b.tic();

lib/node_modules/@stdlib/stats/base/dists/chisquare/kurtosis/benchmark/c/benchmark.c

@@ -16,12 +16,12 @@
 * limitations under the License.
 */
 
-#include <sys/time.h>
 #include "stdlib/stats/base/dists/chisquare/kurtosis.h"
 #include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <time.h>
+#include <sys/time.h>
 
 #define NAME "chisquare-kurtosis"
 #define ITERATIONS 1000000

lib/node_modules/@stdlib/stats/base/dists/chisquare/kurtosis/src/main.c

@@ -21,8 +21,8 @@
 /**
 * Returns the excess kurtosis of a chi-squared distribution.
 *
-* @param k    degrees of freedom (must be positive)
-* @return     excess kurtosis, or NaN if input is invalid
+* @param k: PositiveNumber - degrees of freedom
+* @return PositiveNumber - excess kurtosis
 *
 * @example
 * double v = stdlib_base_dists_chisquare_kurtosis( 9.0 );