Fix typos in disable-signup.mdx

Author: Abo7atm

docs/authentication/email-password/disable-signup.mdx

@@ -6,7 +6,7 @@ sidebar_position: 8
 ---
 
 
-# Disable the Sing Up Flow
+# Disable the Sign Up Flow
 
 <DescriptionText>
   Learn how to disable the sign up flow for the `EmailPassword` recipe.
@@ -106,9 +106,9 @@ Just make sure that the user will not be able to view any sign up elements on th
 </UIType.CustomUIContent>
 
 
-## Disable the Backend SDK sing up endpoints
+## Disable the Backend SDK sign up endpoints
 
-Override the **Backend SDK** API functions to prevent sing up attempts.
+Override the **Backend SDK** API functions to prevent sign up attempts.
 
 <BackendTabs>
 <BackendTabs.TabItem value="nodejs">