[ci skip] Fix documentation errors

README.md

@@ -264,13 +264,13 @@ Path("/foo/bar/../baz")  // => /foo/baz
 
 // symlinks are not resolved
 Path.root.bar.symlink(as: "foo")
-Path("foo")        // => /foo
+Path("/foo")        // => /foo
 Path.foo           // => /foo
 
 // unless you do it explicitly
-try Path.foo.readlink()  // => /bar
-                         // `readlink` only resolves the *final* path component,
-                         // thus use `realpath` if there are multiple symlinks
+try Path.root.foo.readlink()  // => /bar
+                              // `readlink` only resolves the *final* path component,
+                              // thus use `realpath` if there are multiple symlinks
 ```
 
 *Path.swift* has the general policy that if the desired end result preexists,