Add note about tab vs. rightarrow for predictions (#12814)

Author: sdwheeler

reference/docs-conceptual/learn/shell/tab-completion.md

@@ -4,7 +4,7 @@ description: >
     extend its capabilities.
 no-loc: [<kbd>Tab</kbd>, <kbd>Ctrl</kbd>, <kbd>Space</kbd>]
 title: Using tab-completion in the shell
-ms.date: 11/21/2025
+ms.date: 03/04/2026
 ---
 # Using tab-completion in the shell
 
@@ -127,6 +127,11 @@ that use advanced logic to provide suggestions for full commands. The **Az.Tools
 was the first plug-in for Predictive IntelliSense. It uses Machine Learning to predict what Azure
 PowerShell command you want to run and the parameters you want to use.
 
+Prediction suggestions aren't tab-completion suggestions. They're generated from a different
+source. By default, prediction suggestions appear in gray text following the cursor. Use the
+<kbd>RightArrow</kbd> key to accept the suggestion. If you hit the <kbd>Tab</kbd> key instead, the
+suggestion will be ignored and the next tab-completion option is offered.
+
 For more information, see [Using predictors][08].
 
 <!-- link references -->

reference/docs-conceptual/learn/shell/using-predictors.md

@@ -46,7 +46,8 @@ Install **PSReadLine** using the [Microsoft.PowerShell.PSResourceGet][05] module
 Install-PSResource -Name PSReadLine
 ```
 
-**PSReadLine** can be installed in Windows PowerShell 5.1 or in PowerShell 7 or higher. To use predictor plug-ins, you must be running in PowerShell 7.2 or higher. Windows PowerShell 5.1 can use
+**PSReadLine** can be installed in Windows PowerShell 5.1 or in PowerShell 7 or higher. To use
+predictor plug-ins, you must be running in PowerShell 7.2 or higher. Windows PowerShell 5.1 can use
 the history-based predictor.
 
 In **PSReadLine** 2.2.6, Predictive IntelliSense is enabled by default depending on the following