docs: Numerous spelling and grammer fixes in flight controller section (#26582)

docs/en/flight_controller/durandal.md

@@ -1,6 +1,6 @@
 # Holybro Durandal
 
-:::warning
+::: warning
 PX4 does not manufacture this (or any) autopilot.
 Contact the [manufacturer](https://holybro.com/) for hardware support or compliance issues.
 :::
@@ -19,7 +19,7 @@ At high level, some of the key features are:
 - Internal vibration isolation system.
 - Dual high-performance, low-noise IMUs on board are designed for demanding stabilization applications.
 
-A summary of the key features, [assembly](../assembly/quick_start_durandal.md), and [purchase](#purchase) links can be found below.
+A summary of the key features, [assembly](../assembly/quick_start_durandal.md), and [purchase](#store) links can be found below.
 
 ::: info
 This flight controller is [manufacturer supported](../flight_controller/autopilot_manufacturer_supported.md).
@@ -86,9 +86,7 @@ This flight controller is [manufacturer supported](../flight_controller/autopilo
 
 For more information see: [Durandal Technical Data Sheet](https://cdn.shopify.com/s/files/1/0604/5905/7341/files/Durandal_technical_data_sheet_90f8875d-8035-4632-a936-a0d178062077.pdf).
 
-<a id="purchase"></a>
-
-## Where to Buy
+## Where to Buy {#store}
 
 Order from [Holybro](https://holybro.com/products/durandal).
 
@@ -155,14 +153,14 @@ The [Durandal Wiring Quick Start](../assembly/quick_start_durandal.md) provides
 
 ## Building Firmware
 
-:::tip
+::: tip
 Most users will not need to build this firmware!
 It is pre-built and automatically installed by _QGroundControl_ when appropriate hardware is connected.
 :::
 
 To [build PX4](../dev_setup/building_px4.md) for this target:
 
-```
+```sh
 make holybro_durandal-v1_default
 ```
 
@@ -372,7 +370,7 @@ These can also be downloaded from [here](https://cdn.shopifycdn.net/s/files/1/06
 
 <a id="warn_sensor"></a>
 
-:::warning
+::: warning
 \++ Sensors connected to pins 8, 9 must not send a signal exceeding the indicated voltage.
 :::