Update docs link to match line numbers (#3560)

Author: thomas-bc

docs/how-to/develop-gds-plugins.md

@@ -39,7 +39,7 @@ category is summarized in the table below.
 |---------------|---------------|--------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------|
 | framing       | Selection     | Implement a framer/deframer pair to handle serialized data               | [FramerDeframer](https://github.com/fprime-community/fprime-gds/blob/devel/src/fprime_gds/common/communication/framing.py#L24)    |
 | communication | Selection     | Implement a communication adapter for flight software communication      | [BaseAdapter](https://github.com/fprime-community/fprime-gds/blob/devel/src/fprime_gds/common/communication/adapters/base.py#L16) |
-| gds-app       | Functionality | Implement a new GDS application isolated to a separate process           | [GdsApp](https://github.com/fprime-community/fprime-gds/blob/devel/src/fprime_gds/executables/apps.py#L76)                        |
+| gds-app       | Functionality | Implement a new GDS application isolated to a separate process           | [GdsApp](https://github.com/fprime-community/fprime-gds/blob/devel/src/fprime_gds/executables/apps.py#L88)                        |
 | gds-function  | Functionality | (Advanced) Implement new GDS functionality with control over the process | [GdsFunction](https://github.com/fprime-community/fprime-gds/blob/devel/src/fprime_gds/executables/apps.py#L40)                   |
 
 
@@ -425,4 +425,4 @@ A tutorial on python packaging including building wheels and uploading them to P
 ## Conclusion
 
 This guide has covered how to develop GDS plugins, their design, and selection vs functionality plugins. You should now
-be capable of writing plugins and handling arguments.
+be capable of writing plugins and handling arguments.