Fix typo in 2021.03.01 release notes

Signed-off-by: David Abdurachmanov <[email protected]>

ReleaseNotes/2021.03.01.md

@@ -2,7 +2,7 @@
 
 This release includes major changes compared previous Freedom Unleashed SDK and thus is **experimental** at this stage. The main changes include:
 
-- OpenSBI was updated to support ``gpio-poweroff` on HiFive Unmatched using SBI v0.1 legacy `sbi_shutdown()` call.
+- OpenSBI was updated to support `gpio-poweroff` on HiFive Unmatched using SBI v0.1 legacy `sbi_shutdown()` call.
 - U-Boot was updated for HiFive Unmatched:
 	+ Modified device tree to include `gpio-poweroff` node needed for OpenSBI.
 	+ Added reset for USB Hub, PCIe-USB bridge, ULPI device via GPIOs.
@@ -45,4 +45,4 @@ This release includes major changes compared previous Freedom Unleashed SDK and
 6. If the desktop is unresponsive/frozen (i.e. the keyboard doesn't work or/and the mouse doesn't work, the clock is not updating, etc.) try `systemctl restart display-manager` from the serial console.
 7. If the keyboard or/and mouse is not responsive/frozen check if the input device is available under `libinput list-devices` and if events are registered by`libinput debug-events` in the console. If events are registered try the command from #6 above otherwise manually unplug and plug the keyboard or/and mouse.
 8. If your desktop is very slow check Mesa OpenGL rendered (`glxinfo | grep OpenGL`). If it is `OpenGL renderer string: llvmpipe` restart the system. In rare cases Mesa might fallback to `llvmpipe`, but restart usually resolved the issue.
-9. Restart is not implemented in software for HiFive Unmatched.
+9. Restart is not implemented in software for HiFive Unmatched.