Update doc/source/protocols/rabi/rabi.rst

Co-authored-by: Alessandro Candido <[email protected]>

doc/source/protocols/rabi/rabi.rst

@@ -38,7 +38,7 @@ The possibility to calibrate an `R_x(\pi/2)` rotation as native gate allows us t
 is exactly half that of the `R_x(\pi)` amplitude (duration). This assumption presumes a perfectly linear response of the qubit to the drive pulse, which is
 often not the case due to nonlinearities in the qubit's response or imperfections in the pulse shaping :cite:p:`Chen2018MetrologyOQ`.
 
-In this case the pulse sequence is the same as before with the only difference that instad of a single `R_x(\pi)` pulse we use two concatenated `R_x(\pi/2)` pulses.
+In this case the pulse sequence is the same as before with the only difference that instead of a single `R_x(\pi)` pulse we use two concatenated `R_x(\pi/2)` pulses.
 
 Parameters
 ^^^^^^^^^^