fixed wrong examples

lib/system.nim

@@ -728,7 +728,7 @@ proc ord*[T](x: T): int {.magic: "Ord", noSideEffect.}
   ## returns the internal int value of an ordinal value ``x``.
   ##
   ## .. code-block:: nim
-  ##  card('A') #=> 65
+  ##  ord('A') #=> 65
 
 proc chr*(u: range[0..255]): char {.magic: "Chr", noSideEffect.}
   ## converts an int in the range 0..255 to a character.
@@ -1371,7 +1371,7 @@ proc delete*[T](x: var seq[T], i: Natural) {.noSideEffect.} =
   ##
   ## .. code-block:: nim
   ##  var i = @[1,2,3,4,5]
-  ##  i.del(2) #=> @[1, 2, 4, 5]
+  ##  i.delete(2) #=> @[1, 2, 4, 5]
   template defaultImpl =
     let xl = x.len
     for j in i..xl-2: shallowCopy(x[j], x[j+1])