[dev-v5][Docs] Add placeholder autofill docs from v4

examples/Demo/FluentUI.Demo.Client/Documentation/Components/List/Autocomplete/FluentAutocomplete.md

@@ -58,6 +58,10 @@ instead of by reference. Without this, previously selected items may not appear
 
 {{ AutocompleteComparer }}
 
+## Placeholders and autofill
+
+{{ INCLUDE PlaceholderAutofill }}
+
 ## API FluentAutocomplete
 
 {{ API Type=FluentAutocomplete<string,string> }}

examples/Demo/FluentUI.Demo.Client/Documentation/Components/List/Combobox/FluentCombobox.md

@@ -55,6 +55,10 @@ The following example shows how to customize the items:
 
 See a similar example on the [FluentSelect](/List/Select#customize-the-items) page.
 
+## Placeholders and autofill
+
+{{ INCLUDE PlaceholderAutofill }}
+
 ## API FluentCombobox
 
 {{ API Type=FluentCombobox<string,string> }}

examples/Demo/FluentUI.Demo.Client/Documentation/Components/TextInput/FluentTextInput.md

@@ -122,9 +122,12 @@ You cannot modify them dynamically.
 
 You can set the `TextInputType` property to define the type of the text input. This relies on browser supplied support for the different types and can therefore vary between browsers.
 
-
 {{ TextInputTypes }}
 
+## Placeholders and autofill
+
+{{ INCLUDE PlaceholderAutofill }}
+
 ## API FluentTextInput
 
 {{ API Type=FluentTextInput }}

examples/Demo/FluentUI.Demo.Client/Documentation/General/PlaceholderAutofill.md

@@ -0,0 +1,20 @@
+The `Placeholder` parameter is used to set the placeholder text for the input field. This is a short hint that describes the expected value of the input field.
+It is displayed when the input field is empty and not focused. 
+
+The placeholder value affects the autofill suggestion feature in Microsoft Edge and Google Chrome.
+Even if you set the `AutoComplete` parameter to `off`, the browser may still display autofill suggestions based on the placeholder value.
+
+There are certain placeholder values which you should avoid to prevent the browser from showing autofill suggestions.
+
+| Value (Placeholder/Name) | Description                          |
+|--------------------------|--------------------------------------|
+| `name`, `full name`, `first name`, `last name`| Personal name fields |
+| `email`, `e-mail`, `mail`| Email address fields |
+| `address`, `street`, `city`, `zip`, `postal`| Address and postal code fields |
+| `phone`, `tel`| Phone number fields |
+| `username`, `user`, `login`| Username or login fields |
+| `password`, `pwd`| Password fields |
+| `dob`, `birthdate`, `date of birth`| Date of birth fields |
+| `cc`, `card number`, `credit card`| Credit card fields |
+
+If you still want to use these placeholder values, then you need to disable autofill in your browser settings completely.