Editorial: Fix a trivial typo (toLocalString → toLocaleString) (#628)

spec.html

@@ -22907,7 +22907,7 @@ <h1>Object.prototype.toLocaleString ( [ _reserved1_ [ , _reserved2_ ] ] )</h1>
           1. Let _O_ be the *this* value.
           1. Return ? Invoke(_O_, `"toString"`).
         </emu-alg>
-        <p>The optional parameters to this function are not used but are intended to correspond to the parameter pattern used by ECMA-402 `toLocalString` functions. Implementations that do not include ECMA-402 support must not use those parameter positions for other purposes.</p>
+        <p>The optional parameters to this function are not used but are intended to correspond to the parameter pattern used by ECMA-402 `toLocaleString` functions. Implementations that do not include ECMA-402 support must not use those parameter positions for other purposes.</p>
         <emu-note>
           <p>This function provides a generic `toLocaleString` implementation for objects that have no locale-specific `toString` behaviour. `Array`, `Number`, `Date`, and `Typed Arrays` provide their own locale-sensitive `toLocaleString` methods.</p>
         </emu-note>