docs: fix typo

Signed-off-by: Pratik  <bhagwatpratik781@gmail.com>

Author: iampratik13

lib/node_modules/@stdlib/stats/base/ndarray/dnanstdevtk/docs/repl.txt

@@ -1,7 +1,7 @@
 
 {{alias}}( arrays )
     Computes the standard deviation of a one-dimensional double-precision
-    floating-point ndarray, ignoring `NaN` values and using a a one-pass
+    floating-point ndarray, ignoring `NaN` values and using a one-pass
     textbook algorithm.
 
     If provided an empty one-dimensional ndarray, the function returns `NaN`.