Fix links for "WeAct MiniSTM32H7*" boards

The previous links lead through a GitHub username change redirect to a repository that appears to be used to demonstrate a security vulnerability.

I replaced them with links to the repo under the WeActStudio GitHub account which actually contains information about the hardware. The other links for WeAct hardware in the readme are under that GitHub and the product listings under the "WeAct Studio Official Store" on AliExpress.

Author: per1234

README.md

@@ -518,7 +518,7 @@ User can add a STM32 based board following this [wiki](https://github.com/stm32d
 | :green_heart: | STM32H743IG<br>STM32H743II | Generic Board | *2.0.0* |  |
 | :green_heart: | STM32H743VG<br>STM32H743VI | Generic Board | *2.0.0* |  |
 | :green_heart: | STM32H743VI | [DevEBox H743VIT6](https://github.com/mcauser/MCUDEV_DEVEBOX_H7XX_M) | *2.2.0* | |
-| :green_heart: | STM32H743VI | [WeAct MiniSTM32H743VIT6](https://github.com/WeActTC/MiniSTM32H7xx) | *2.2.0* | [More info](https://github.com/stm32duino/Arduino_Core_STM32/pull/1552) |
+| :green_heart: | STM32H743VI | [WeAct MiniSTM32H743VIT6](https://github.com/WeActStudio/MiniSTM32H7xx) | *2.2.0* | [More info](https://github.com/stm32duino/Arduino_Core_STM32/pull/1552) |
 | :green_heart: | STM32H743ZG<br>STM32H743ZI | Generic Board | *2.0.0* |  |
 | :green_heart: | STM32H747AG<br>STM32H747AI | Generic Board | *2.0.0* |  |
 | :green_heart: | STM32H747IG<br>STM32H747II | Generic Board | *2.0.0* |  |
@@ -529,7 +529,7 @@ User can add a STM32 based board following this [wiki](https://github.com/stm32d
 | :green_heart: | STM32H750IB | [Daisy Petal SM](https://www.electro-smith.com/daisy/petal-125b-sm) | *2.2.0* |  |
 | :green_heart: | STM32H750VB | Generic Board | *2.0.0* |  |
 | :green_heart: | STM32H750VB | [DevEBox H750VBT6](https://github.com/mcauser/MCUDEV_DEVEBOX_H7XX_M) | *2.2.0* | |
-| :green_heart: | STM32H750VB | [WeAct MiniSTM32H750VBT6](https://github.com/WeActTC/MiniSTM32H7xx) | *2.2.0* | [More info](https://github.com/stm32duino/Arduino_Core_STM32/pull/1552) |
+| :green_heart: | STM32H750VB | [WeAct MiniSTM32H750VBT6](https://github.com/WeActStudio/MiniSTM32H7xx) | *2.2.0* | [More info](https://github.com/stm32duino/Arduino_Core_STM32/pull/1552) |
 | :green_heart: | STM32H753VI | Generic Board | *2.0.0* |  |
 | :green_heart: | STM32H753ZI | Generic Board | *2.0.0* |  |
 | :green_heart: | STM32H757AI | Generic Board | *2.0.0* |  |