docs: fix formatting details for changelog

docs/changelog.md

@@ -96,11 +96,11 @@ Previously, any specific editor changes you'd made, such as folding/collapsing s
 
 ### `pbiFormat` Changes
 
-As Vega-Lite provides some flexibility in the `format` property for custom format types, you can now supply an object or the desired format string. Refer to the Formatting Values page for further details.
+As Vega-Lite provides some flexibility in the `format` property for custom format types, you can now supply an object or the desired format string. Refer to the [Formatting Values](formatting#object-example) page for further details.
 
 ### `pbiFormatAutoUnit` Format Type
 
-This format type has been added as a convenience to emulate _Auto_ units, commonly used in other Power BI visuals. This will use the same logic that Power BI uses to convert values to K, M, Bn, etc. Refer to the Formatting Values page for further details.
+This format type has been added as a convenience to emulate _Auto_ units, commonly used in other Power BI visuals. This will use the same logic that Power BI uses to convert values to K, M, Bn, etc. Refer to the [Formatting Values](formatting#auto-formatting-with-pbiformatautounit) page for further details.
 
 ### `pbiContainer` Signal
 

docs/deeper-concepts/formatting-values.md

@@ -76,6 +76,7 @@ This results in something a little more human-readable:
 
 ![vega-lite-billions.png](./img/vega-lite-billions.png "After applying a Power BI format string and specifying our custom formatter, the axis becomes much more human readable. This updates to show tick values as $bn, to one decimal place.")
 
+<div id="object-example"></div>
 :::info Vega-Lite's format property is extensible
 The `format` property can also expect an object instead of a string. If you use an object for the `pbiFormat` or `pbiFormatAutoUnit` format types, you can use an object that can include any of the optional `ValueFormatterOptions` properties from [Microsoft's formatting library for custom visuals](https://learn.microsoft.com/en-us/power-bi/developer/visuals/utils-formatting?WT.mc_id=DP-MVP-5003712#valueformatteroptions). The following example is synonymous with the above one:
 
@@ -224,6 +225,8 @@ When using `pbiFormat` in an expression function, you have a bit more versatilit
 
 ```
 pbiFormat(value, format, options = {})
+
+pbiFormat(value, options = {})
 ```
 
 - The `value` parameter is the number value that you wish to format.