Fix typos

doc/api.markdown

@@ -35,7 +35,7 @@ one-to-one correspondence.  As an example, `foo.js` loads the module
 
 The contents of `foo.js`:
 
-    var circle = require('./circle'),
+    var circle = require('./circle');
     var sys = require('sys');
     sys.puts( 'The area of a circle of radius 4 is '
             + circle.area(4));

lib/events.js

@@ -10,7 +10,7 @@ process.EventEmitter.prototype.emit = function (type) {
       if (arguments[1] instanceof Error) {
         throw arguments[1];
       } else {
-        throw new Error("Uncaught, unspecfied 'error' event.");
+        throw new Error("Uncaught, unspecified 'error' event.");
       }
       return false;
     }