fix readme

README.md

@@ -145,7 +145,7 @@ Examples:
    crackNum -f3+4    0b0111001             -- decode as float with 3 bits exponent, 4 bits significand
    crackNum -fbp     0x000F                -- decode as a brain-precision float
    crackNum -fdp     0x8000000000000000    -- decode as a double-precision float
-   crackNum -fhp     0x8000000000000000    -- decode as a double-precision float
+   crackNum -fhp     0x8000                -- decode as a half-precision float
    crackNum -l4 -fhp 64\'hbdffaaffdc71fc60 -- decode as half-precision float over 4 lanes using verilog notation
 
  Notes: