chore: added NaN value in examples

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Author: 0PrashantYadav0

lib/node_modules/@stdlib/stats/base/dnanvariancech/README.md

@@ -269,7 +269,7 @@ double stdlib_strided_dnanvariancech( const CBLAS_INT N, const double correction
 Computes the [variance][variance] of a double-precision floating-point strided array ignoring `NaN` values and using a one-pass trial mean algorithm and alternative indexing semantics.
 
 ```c
-const double x[] = { 1.0, -2.0, 0.0/0.0, 2.0 };
+const double x[] = { 1.0, -2.0, NaN, 2.0 };
 
 double v = stdlib_strided_dnanvariancech_ndarray( 4, 1.0, x, 1, 0 );
 // returns ~4.3333

lib/node_modules/@stdlib/stats/base/dnanvariancech/docs/types/index.d.ts

@@ -74,7 +74,7 @@ interface Routine {
 * @example
 * var Float64Array = require( '@stdlib/array/float64' );
 *
-* var x = new Float64Array( [ 1.0, -2.0, 2.0 ] );
+* var x = new Float64Array( [ 1.0, -2.0, NaN, 2.0 ] );
 *
 * var v = dnanvariancech( x.length, 1, x, 1 );
 * // returns ~4.3333