fix(playground): use prVersion (#3613)

scripts/build/build-docs.js

@@ -24,7 +24,7 @@ const parserPaths = parsers.map(stripLanguageDirectory);
 
 if (isPullRequest) {
   const pkg = require("../../package.json");
-  pkg.version = `pr-${process.env.REVIEW_ID}`;
+  pkg.prVersion = `pr-${process.env.REVIEW_ID}`;
   pipe(JSON.stringify(pkg, null, 2)).to("package.json");
   shell.exec("node scripts/build/build.js");
 }

website/static/worker.js

@@ -103,7 +103,7 @@ self.onmessage = function(message) {
     doc: doc,
     ast: ast,
     formatted2: formatted2,
-    version: prettier.version
+    version: prettier.prVersion || prettier.version
   });
 };