Update spec URLs for javascript.operators.spread (#17017)

Author: sideshowbarker

javascript/operators/spread.json

@@ -61,7 +61,7 @@
           "__compat": {
             "description": "Spread in array literals",
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax#Spread_in_array_literals",
-            "spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-expressions.html#sec-array-initializer",
+            "spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-expressions.html#prod-SpreadElement",
             "support": {
               "chrome": {
                 "version_added": "46"
@@ -119,6 +119,7 @@
           "__compat": {
             "description": "Spread in function calls",
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax#Spread_in_function_calls",
+            "spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-expressions.html#prod-ArgumentList",
             "support": {
               "chrome": {
                 "version_added": "46"
@@ -173,7 +174,7 @@
           "__compat": {
             "description": "Spread in object literals",
             "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/Spread_syntax#Spread_in_object_literals",
-            "spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-expressions.html#sec-object-initializer",
+            "spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-expressions.html#prod-PropertyDefinition",
             "support": {
               "chrome": {
                 "version_added": "60"