Add comment on getTitle (rappasoft#1976)

Author: lrljoe

docs/columns/styling.md

@@ -45,6 +45,11 @@ Below is a copy of the relevant sections from [datatable styling](../datatable/s
 
 Set a list of attributes to override on the th elements.  
 
+If your Column does not have a field (e.g. a label column), then you may use the following, which will utilise the first parameter in Column::make()
+```php
+  $column->getTitle()
+```
+
 ```php
 public function configure(): void
 {
@@ -204,6 +209,11 @@ public function configure(): void
 
 Set a list of attributes to override on the td elements.  For example, changing the background color between red/green based on whether the "total" field is over or under 1000.
 
+If your Column does not have a field (e.g. a label column), then you may use the following, which will utilise the first parameter in Column::make()
+```php
+  $column->getTitle()
+```
+
 ```php
 public function configure(): void
 {

docs/datatable/styling.md

@@ -150,6 +150,11 @@ public function configure(): void
 
 Set a list of attributes to override on the th elements.  
 
+If your Column does not have a field (e.g. a label column), then you may use the following, which will utilise the first parameter in Column::make()
+```php
+  $column->getTitle()
+```
+
 ```php
 public function configure(): void
 {
@@ -311,6 +316,11 @@ public function configure(): void
 
 Set a list of attributes to override on the td elements
 
+If your Column does not have a field (e.g. a label column), then you may use the following, which will utilise the first parameter in Column::make()
+```php
+  $column->getTitle()
+```
+
 ```php
 public function configure(): void
 {