chore: add indentation

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

Author: ShabiShett07

lib/node_modules/@stdlib/blas/base/dtbmv/test/fixtures/row_major_l_t_nu.json

@@ -18,5 +18,5 @@
     [ 0.0, 5.0, 3.0 ]
   ],
   "x": [ 1.0, 2.0, 3.0 ],
-  "x_out": [8.0, 23.0, 0.0 ]
+  "x_out": [ 8.0, 23.0, 0.0 ]
 }