Update comments

Author: mdmintz

seleniumbase/console_scripts/run.py

@@ -120,12 +120,12 @@ def show_install_usage():
     print("           sbase install chromedriver")
     print("           sbase install geckodriver")
     print("           sbase install edgedriver")
-    print("           sbase install chromedriver 89")
-    print("           sbase install chromedriver 89.0.4389.23")
+    print("           sbase install chromedriver 91")
+    print("           sbase install chromedriver 91.0.4472.101")
     print("           sbase install chromedriver latest")
     print("           sbase install chromedriver -p")
     print("           sbase install chromedriver latest -p")
-    print("           sbase install edgedriver 89.0.774.54")
+    print("           sbase install edgedriver 91.0.864.67")
     print("  Output:")
     print("           Installs the chosen webdriver to seleniumbase/drivers/")
     print("           (chromedriver is required for Chrome automation)")

seleniumbase/core/tour_helper.py

@@ -192,7 +192,7 @@ def is_introjs_activated(driver):
 
 def activate_shepherd(driver):
     """Allows you to use Shepherd Tours with SeleniumBase
-    http://github.hubspot.com/shepherd/docs/welcome/
+    https://cdnjs.com/libraries/shepherd/1.8.1
     """
     shepherd_js = constants.Shepherd.MIN_JS
     sh_theme_arrows_css = constants.Shepherd.THEME_ARROWS_CSS