README.md: Update reference to 6lowpan patch

Point to the fix rather than workaround patch version.

Signed-off-by: Zbigniew Bodek <zbigniew.bodek@huawei.com>

README.md

@@ -103,8 +103,8 @@ file.
 ```
 
 **Note:** `6lowpan` module has a bug that prevents it from creating a successful
-          TCP connection. Make sure that this problem is worked around by
-	  applying [this](https://git.ostc-eu.org/OSTC/OHOS/meta-av96/-/raw/develop/meta-av96-core/recipes-kernel/linux-stm32mp/files/0005-6lowpan-Workaround-for-unexpected-values-in-skb-s-co.patch)
+          TCP connection. Make sure that this problem is fixed by applying
+	  [this](https://git.ostc-eu.org/OSTC/OHOS/meta-av96/-/raw/develop/meta-av96-core/recipes-kernel/linux-stm32mp/files/0005-Bluetooth-6lowpan-fix-direct-peer-to-peer-connection.patch)
 	  patch.
 
 4. Enable `6lowpan` (should be enabled by default)