Rename packages in preparation for OSS release (microsoft#714)

Author: nguerrera

docs/tutorial.md

@@ -14,8 +14,8 @@ function read(filename) {
 }
 
 export const repoRoot = resolve(dirname(fileURLToPath(import.meta.url)), "../..");
-export const prettier = resolve(repoRoot, "packages/cadl/node_modules/.bin/prettier");
-export const tsc = resolve(repoRoot, "packages/cadl/node_modules/.bin/tsc");
+export const prettier = resolve(repoRoot, "packages/compiler/node_modules/.bin/prettier");
+export const tsc = resolve(repoRoot, "packages/compiler/node_modules/.bin/tsc");
 
 const rush = read(`${repoRoot}/rush.json`);