Link board names to product pages in SoftwareSerial pins table

Some board names (e.g., "Nano") are potentially ambiguous to the reader. This is avoided without the introduction of
verbosity by linking to the specific hardware page.

Author: per1234

Diff for: content/learn/07.built-in-libraries/04.software-serial/software-serial.md

@@ -28,11 +28,11 @@ If your project requires simultaneous data flows, see Paul Stoffregen's [AltSoft
 
 ### Supported Pins
 
-| Board                    | RX                                           | TX  |
-| ------------------------ | -------------------------------------------- | --- |
-| 101                      | 0-12, 14 (A0) - 19 (A5)                      |     |
-| Leonardo<br />Micro      | 8, 9, 10, 11, 14 (MISO), 15 (SCK), 16 (MOSI) | Any |
-| Mega<br />Mega 2560 Rev3 | 10-15, 50-53, A8 (62)-A15 (69)               | Any |
+| Board                                                                                               | RX                                           | TX  |
+| --------------------------------------------------------------------------------------------------- | -------------------------------------------- | --- |
+| [101](/retired/boards/arduino-101-619/)                                                             | 0-12, 14 (A0) - 19 (A5)                      |     |
+| [Leonardo](/hardware/leonardo/)<br />[Micro](/hardware/micro/)<br />[Yún Rev2](/hardware/yun-rev2/) | 8, 9, 10, 11, 14 (MISO), 15 (SCK), 16 (MOSI) | Any |
+| [Mega](/retired/other/hardware-pictures/)<br />[Mega 2560 Rev3](/hardware/mega-2560/)               | 10-15, 50-53, A8 (62)-A15 (69)               | Any |
 
 ## Examples