Update doc/specs/stdlib_linalg.md

Co-authored-by: Jeremie Vandenplas <jeremie.vandenplas@gmail.com>

Author: perazz

doc/specs/stdlib_linalg.md

@@ -1183,6 +1183,7 @@ The solver is based on LAPACK's `*POTRF` backends.
 ### Syntax
 
 `call ` [[stdlib_linalg(module):cholesky(interface)]] `(a, c, lower [, other_zeroed] [, err])`
+
 ### Class
 Subroutine