Add binary literal example to methods of SimulatesAmplitudes class (quantumlib#5818)

Author: Caffetaria

cirq/sim/simulator.py

@@ -156,7 +156,9 @@ def compute_amplitudes(
             bitstrings: The bitstrings whose amplitudes are desired, input
                 as an integer array where each integer is formed from measured
                 qubit values according to `qubit_order` from most to least
-                significant qubit, i.e. in big-endian ordering.
+                significant qubit, i.e. in big-endian ordering. If inputting
+                a binary literal add the prefix 0b or 0B.
+                For example: 0010 can be input as 0b0010, 0B0010, 2, 0x2, etc.
             param_resolver: Parameters to run with the program.
             qubit_order: Determines the canonical ordering of the qubits. This
                 is often used in specifying the initial state, i.e. the
@@ -214,7 +216,9 @@ def compute_amplitudes_sweep_iter(
             bitstrings: The bitstrings whose amplitudes are desired, input
                 as an integer array where each integer is formed from measured
                 qubit values according to `qubit_order` from most to least
-                significant qubit, i.e. in big-endian ordering.
+                significant qubit, i.e. in big-endian ordering. If inputting
+                a binary literal add the prefix 0b or 0B.
+                For example: 0010 can be input as 0b0010, 0B0010, 2, 0x2, etc.
             params: Parameters to run with the program.
             qubit_order: Determines the canonical ordering of the qubits. This
                 is often used in specifying the initial state, i.e. the