Update doc/specs/stdlib_linalg.md

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

Author: perazz

doc/specs/stdlib_linalg.md

@@ -630,7 +630,7 @@ Two
 
 `b`: Shall be a rank-1 or rank-2 array of the same kind as `a`, containing the right-hand-side vector(s). It is an `intent(in)` argument.
 
-`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.
+`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.