chore: fix docs and update comment

Author: kgryte

lib/node_modules/@stdlib/blas/base/scopy-wasm/docs/repl.txt

@@ -371,7 +371,7 @@
     Int32Array before passing the values to this method.
 
     If provided an array having an unknown or "generic" data type, elements are
-    written as double-precision floating-point numbers.
+    written as single-precision floating-point numbers.
 
     Parameters
     ----------
@@ -410,7 +410,7 @@
     after reading memory values using this method.
 
     If provided an output array having an unknown or "generic" data type,
-    elements are read as double-precision floating-point numbers.
+    elements are read as single-precision floating-point numbers.
 
     Parameters
     ----------

lib/node_modules/@stdlib/blas/base/scopy-wasm/test/test.main.js

@@ -242,7 +242,7 @@ tape( 'the `main` method supports view offsets', function test( t ) {
 
 	// Create offset views...
 	x1 = new Float32Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // begin at 2nd element
-	y1 = new Float32Array( y0.buffer, y0.BYTES_PER_ELEMENT*3 ); // begin at the 4th element
+	y1 = new Float32Array( y0.buffer, y0.BYTES_PER_ELEMENT*3 ); // begin at 4th element
 
 	scopy.main( 3, x1, -2, y1, 1 );
 	expected = new Float32Array([