style: wrap ternary conditions in parentheses in stats/incr examples

Wrap the `isnan` ternary conditions in the nanmmin and nanmrss example
files to satisfy the stdlib/ternary-condition-parentheses lint rule.

Signed-off-by: Philipp Burckhardt <pburckhardt@outlook.com>

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Author: Planeshifter

lib/node_modules/@stdlib/stats/incr/nanmmin/examples/index.js

@@ -35,5 +35,5 @@ console.log( '\nValue\tMin\n' );
 for ( i = 0; i < 100; i++ ) {
 	v = ( randu() < 0.1 ) ? NaN : randu() * 100.0;
 	m = accumulator( v );
-	console.log( '%s\t%s', isnan( v ) ? 'NaN' : v.toFixed( 4 ), ( m === null ) ? 'null' : m.toFixed( 4 ) );
+	console.log( '%s\t%s', ( isnan( v ) ) ? 'NaN' : v.toFixed( 4 ), ( m === null ) ? 'null' : m.toFixed( 4 ) );
 }

lib/node_modules/@stdlib/stats/incr/nanmrss/examples/index.js

@@ -38,5 +38,5 @@ for ( i = 0; i < 100; i++ ) {
 	v1 = ( bernoulli( 0.8 ) < 1 ) ? NaN : uniform( 0.0, 100.0 );
 	v2 = ( bernoulli( 0.8 ) < 1 ) ? NaN : uniform( 0.0, 100.0 );
 	rss = accumulator( v1, v2 );
-	console.log( '%s\t%s\t%s', isnan( v1 ) ? 'NaN' : v1.toFixed( 3 ), isnan( v2 ) ? 'NaN' : v2.toFixed( 3 ), ( rss === null ) ? 'null' : rss.toFixed( 3 ) );
+	console.log( '%s\t%s\t%s', ( isnan( v1 ) ) ? 'NaN' : v1.toFixed( 3 ), ( isnan( v2 ) ) ? 'NaN' : v2.toFixed( 3 ), ( rss === null ) ? 'null' : rss.toFixed( 3 ) );
 }