Fix a bug when trigger line in not just trigger.

To prevent bug like this('///' is trigger):

///static NSArray *array;

int main (int argc, const char * argv[])

VVDocumenter-Xcode/VVDocumenterManager.m

@@ -123,6 +123,11 @@ - (void) textStorageDidChange:(NSNotification *)noti {
                     return;
                 }
 
+                // Current line is not just triggerString, so ignore this
+                if (currentLineResult.range.location + currentLineResult.range.length + 1 != nextLineResult.range.location) {
+                    return;
+                }
+
                 //Get a @"///" (triggerString) typed in by user. Do work!
                 self.prefixTyped = NO;