Update spec.emu

Co-authored-by: Eemeli Aro <[email protected]>

Author: jessealama

spec.emu

@@ -99,7 +99,7 @@ location: https://github.com/tc39/proposal-measure/
             1. Let _oneFewerZero_ be the string concatenation of *"0"* and _afterDoubleZero_.
             1. Return CanonicalizeDigitString(_oneFewerZero_).
           1. If _s_ begins with an occurrence of *"."*, return the string concatenation of *"0"* and _s_.
-          1. IF _s_ ends with an occurrence of *"."*, return the substring of _s_ from 0 to the index of the final occurrence of *"."* in _s_.
+          1. If _s_ ends with an occurrence of *"."*, return the substring of _s_ from 0 to the index of the final occurrence of *"."* in _s_.
           1. Return _s_.
         </emu-alg>
       </emu-clause>