Spelling in a comment

Fixed spelling error

Author: adamzr

src/main/java/com/twilio/sdk/TwilioUtils.java

@@ -52,7 +52,7 @@ public boolean validateRequest(String expectedSignature, String url, Map<String,
         SecretKeySpec signingKey = new SecretKeySpec(this.authToken.getBytes(), "HmacSHA1");
 
         try {
-            //initialize the hash algortihm
+            //initialize the hash algorithm
             Mac mac = Mac.getInstance("HmacSHA1");    
             mac.init(signingKey);