Fix of U4-4414 UX: Replace Change placeholder text in new installer

Changed "First Last" in the name placeholder to "Full name".

src/Umbraco.Web.UI.Client/src/installer/steps/user.html

@@ -11,7 +11,7 @@
 				<div class="control-group">
 					<label class="control-label" for="name">Name</label>
 					    <div class="controls">
-							<input type="text" name="name" placeholder="First Last"  required 
+							<input type="text" name="name" placeholder="Full name"  required 
 									ng-model="installer.current.model.name" />
 						</div>
 				</div>
@@ -53,4 +53,4 @@
 	</div>
 </form>
 
-</div>
+</div>