Design manager snippet preview update (SharePoint#5933)

* Add "Customize a form for a SharePoint list"

Add "Customize a form for a SharePoint list".

Fix typo in SharePoint flow doc.

* Update subsection titles

* Update create-your-first-custom-form.md

Global notes:
1. Stay in present tense, not future.
2. For reference: Each numbered step always has to have an action associated with it. Otherwise, it is just a statement that is standalone or associated as a combined sentence with an action step. (for example, 1. Select Go. The Go pane appears.) Second sentence (non-action is associated with action step 1.)
3. Use 'select' v 'click' for all screen actions. 'Click' is meant for the exclusive territory of right-clicking and mouse clicks. We don't use 'right-click on.' One simply 'right-clicks' or 'selects.'
4. Always precede ___location of action, then action. For example, we'd write, "Alternatively, in the Tree View, right-click **Title_DataCard1**, and select **Unlock**", not "Alternatively, right-click **Title_DataCard1** in the Tree View, and select **Unlock**."
5. All references to UI are bolded (for example **Properties** pane, **Advanced** pane).
6. Is Tree View a proper noun phrase or generic? I've gone with the latter.
7. A plethora of commas because every discreet action in a sentence of multiple actions needs a comma following it.
8. Buttons don't need the button reference, tabs do. For example, Select **Unlock** v Select the **Unlock** button.
9. Avoid use of exclamation points. Overkill and has lost its meaning in this social media era where everything is an exclamation point or three.
Line 10: "...form-filling experience..."? Awkward. Let's remove it altogether. It's generally assumed that forms need to be filled out.
Line 42: Replaced 'look and feel' with 'appearance.' Let's avoid euphemisms in the writing as they don't localize well.
Line 69: Office 365 or Microsoft 365? Change back if accurate.
Line 73: Are we talking read-only or view-only? Let's be consistent throughout this section.

* Add minor clarification

* Formatting changes

* Update lists & doclib setup URL

* Add requested changes

- Use numbers in bullets
- Remove locales in links
- Mark formulas as in-line code snippets

* Fix numbering

* Add note about deprecated snippet preview

* Revert bizapps change

Co-authored-by: Steven Jia <[email protected]>
Co-authored-by: Jack Wight <[email protected]>

Author: 3 people

docs/general-development/sharepoint-design-manager-snippets.md

@@ -23,9 +23,6 @@ After you convert a master page or create a page layout, you have an HTML versio
 - Configure the properties for that component.
 
 
-- Preview its appearance in the browser.
-    
-  
 - Copy the HTML code snippet to the Clipboard so that you can paste the snippet at the ___location you want in the HTML file.
 
 
@@ -74,8 +71,10 @@ The Snippet Gallery displays different options depending on the file that you're
 
 6. On the ribbon, on the **Design** tab, choose the snippet that you want to add to your page.
 
-    When you select a snippet, the Snippet Gallery refreshes so that the page shows you a preview of that snippet, the properties available for that snippet, and the HTML code snippet that you can copy into your HTML master page or page layout.
+    When you select a snippet, the Snippet Gallery refreshes so that the page shows you the properties available for that snippet and the HTML code snippet that you can copy into your HTML master page or page layout.
 
+    > [!NOTE]
+    > The Snippet Gallery preview is deprecated and does not show a preview of the selected snippet upon refresh.
   
 7. On the right side of the Snippet Gallery, under **About this Component**, click or select section headers to expand or collapse groups of properties, and then configure any custom settings that you want.
 
@@ -84,7 +83,7 @@ The Snippet Gallery displays different options depending on the file that you're
     > [!NOTE]
     > If the property grid has a header that ends with AjaxDelta, you should ignore those properties because they apply to the controls related to the Minimal Download Strategy, which is disabled for master pages and page layouts created through Design Manager. 
 
-8. After you configure any properties, choose **Update**. This updates both the preview and the HTML snippet on the left side of the page, so that the markup reflects your custom settings. You can always choose **Reset** to return all properties to their default settings.
+8. After you configure any properties, choose **Update**. This updates the HTML snippet on the left side of the page, so that the markup reflects your custom settings. You can always choose **Reset** to return all properties to their default settings.
 
 
 9. On the left side of the Snippet Gallery, under **HTML Snippet**, choose **Copy to Clipboard**.