refactor: apply suggestions from previous PRs

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Author: anandkaranubc

lib/node_modules/@stdlib/stats/base/dists/degenerate/mean/README.md

@@ -136,7 +136,7 @@ for ( i = 0; i < 10; i++ ) {
 
 #### stdlib_base_dists_degenerate_mean( mu )
 
-Returns the expected value (mean) of a degenerate distribution.
+Returns the [expected value][expected-value] of a [degenerate][degenerate-distribution] distribution with constant value `mu`.
 
 ```c
 double out = stdlib_base_dists_degenerate_mean( 0.1 );

lib/node_modules/@stdlib/stats/base/dists/degenerate/mean/benchmark/c/benchmark.c

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

lib/node_modules/@stdlib/stats/base/dists/degenerate/mean/src/main.c

@@ -19,10 +19,10 @@
 #include "stdlib/math/base/assert/is_nan.h"
 
 /**
-* Returns the expected value (mean) of a degenerate distribution.
+* Returns the expected value of a degenerate distribution.
 *
 * @param mu   constant value of the distribution
-* @return     expected value, or NaN if input is invalid
+* @return     expected value
 *
 * @example
 * double v = stdlib_base_dists_degenerate_mean( 0.1 );