Update doc/specs/stdlib_linalg.md

Co-authored-by: Jeremie Vandenplas <[email protected]>

Author: perazz

doc/specs/stdlib_linalg.md

@@ -632,7 +632,7 @@ Two
 
 `overwrite_a` (optional): Shall be an input logical flag. if `.true.`, input matrix `a` will be used as temporary storage and overwritten. This avoids internal data allocation. This is an `intent(in)` argument.
 
-`err` (optional): Shall be a `type(linalg_state_type)` value. This is an `intent(out)` argument: the function is not `pure` if this argument is requested.
+`err` (optional): Shall be a `type(linalg_state_type)` value. This is an `intent(out)` argument. The function is not `pure` if this argument is provided.
 
 ### Return value