chore: update variable name

Signed-off-by: Shabareesh Shetty <[email protected]>

Author: ShabiShett07

lib/node_modules/@stdlib/blas/base/csrot/benchmark/fortran/benchmark.length.f

@@ -117,8 +117,8 @@ double precision function benchmark( iterations, len )
     ! ..
     ! External functions:
     interface
-      subroutine csrot( N, cx, strideX, cy, strideY, c, s )
-        complex :: cx(*), cy(*)
+      subroutine csrot( N, x, strideX, y, strideY, c, s )
+        complex :: x(*), y(*)
         integer :: strideX, strideY, N
         real :: c, s
       end subroutine csrot
@@ -208,4 +208,4 @@ subroutine main()
     end do
     call print_summary( count, count )
   end subroutine main
-end program bench
+end program bench