Corretions and refinements to the String examples

build/shared/examples/08.Strings/StringSubstring/StringSubstring.ino

@@ -13,12 +13,12 @@
  */
 
 void setup() {
+  // Open serial communications and wait for port to open:
   Serial.begin(9600);
-  // Wait for port to be opened:
   // this check is only needed on the Leonardo:
   while (!Serial) ;
- ;
-  
+  ;
+
   Serial.println("\n\nString  substring():");
 }
 
@@ -26,7 +26,7 @@ void loop() {
   // Set up a String:
   String stringOne = "Content-Type: text/html";
   Serial.println(stringOne);
-  
+
   // substring(index) looks for the substring from the index position to the end:
   if (stringOne.substring(19) == "html") {
     Serial.println("It's an html file");