minor changes docs

doc/library/tensor/basic.txt

@@ -28,9 +28,9 @@ Where ``<dtype>`` is one of (note that this is not a complete list of
 possible ``<dtypes>``, it just covers thouse used by the predefined
 types):
 
-==== ========= ============== ================
+==== ========== =============== =================
 code type       domain          bits
-==== ========= ============== ================
+==== ========== =============== =================
 b    byte       signed integer  8
 w    word       signed integer  16
 i    integer    signed integer  32
@@ -38,7 +38,8 @@ l    long      signed integer 64
 f    float      floating point  32
 d    double     floating point  64
 c    complex64  complex         64 (two float32)
-==== ========= ============== ================
+z    complex128 complex         128 (two float64)
+==== ========== =============== =================
 
 ``<dimensionality>`` is one of:
 
@@ -110,11 +111,6 @@ complex64   complex          64 (two float32)
 complex128  complex          128 (two float64)
 =========== ================ =================
 
-.. note::
-
-  Not that some `dtypes` are less used then others (for example
-  **complex128**) and as such not are equally tested and supported.
-
 
 The broadcastable pattern indicates both the number of dimensions and
 whether a particular dimension must have length 1.