fixup! feat: feat (stats/incr/nanwmean): adds nanwmean package to the stats/incr/* namespace

This commit adds minor changes to the README.md of the nanwmean package, to improve clarity and fix a mistake in the usage section where a different package was used. 

Author: Don Roy Chacko <[email protected]>
Reviewed-by: hrshya

Co-authored-by: Harsh <[email protected]>
Signed-off-by: Don Roy Chacko <[email protected]>

Author: SergeantQuickscoper

lib/node_modules/@stdlib/stats/incr/nanwmean/README.md

@@ -20,7 +20,7 @@ limitations under the License.
 
 # incrnanwmean
 
-> Compute a [weighted arithmetic mean][weighted-arithmetic-mean] incrementally, while ignoring `NaN` values.
+> Compute a [weighted arithmetic mean][weighted-arithmetic-mean] incrementally, ignoring `NaN` values.
 
 <section class="intro">
 
@@ -48,15 +48,15 @@ The [weighted arithmetic mean][weighted-arithmetic-mean] is defined as
 ## Usage
 
 ```javascript
-var incrnanwmean = require( '@stdlib/stats/incr/wmean' );
+var incrnanwmean = require( '@stdlib/stats/incr/nanwmean' );
 ```
 
 #### incrnanwmean()
 
-Returns an accumulator `function` which incrementally computes a [weighted arithmetic mean][weighted-arithmetic-mean], while ignoring NaN values.
+Returns an accumulator `function` which incrementally computes a [weighted arithmetic mean][weighted-arithmetic-mean], ignoring NaN values.
 
 ```javascript
-var accumulator = incrwmean();
+var accumulator = incrnanwmean();
 ```
 
 #### accumulator( \[x, w] )