Update app.py

app.py

@@ -436,7 +436,7 @@ def button_pressed(text_box):
         text = text + " '{} is experiencing a significantly high amount of negative sentiment content.".format(text_box)
 
     if len(text) == len(original_text):
-        text = text + " No excessive hate speech or low sentiment was observed in @{}'s mentions or timeline".format(text_box)
+        text = text + " No excessive hate speech or low sentiment was observed in @{}'s mentions or timeline.".format(text_box)
     
     return [toxicity_plot_fig, sentiment_plot_fig, fig, text]