Remove statement that bool dtype must be stored as a byte (#89)

Closes gh-86

Author: rgommers

spec/API_specification/data_types.md

@@ -36,7 +36,7 @@ The default array index data type should be clearly defined in a conforming libr
 
 ## bool
 
-Boolean (`True` or `False`) stored as a byte.
+Boolean (`True` or `False`).
 
 ## int8
 
@@ -76,4 +76,4 @@ IEEE 754 single-precision (32-bit) binary floating-point number (see IEEE 754-20
 
 ## float64
 
-IEEE 754 double-precision (64-bit) binary floating-point number (see IEEE 754-2019).
+IEEE 754 double-precision (64-bit) binary floating-point number (see IEEE 754-2019).