Update src/stdlib_io.fypp

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

Author: perazz

src/stdlib_io.fypp

@@ -173,7 +173,7 @@ contains
 
         enddo
       else
-        ! Otherwise pass default or user specified fmt string.  
+        ! Otherwise pass default or user specified fmt string.
         do i = 1, max_rows_
           read (s,fmt_,iostat=ios,iomsg=iomsg) d(i, :)