fix(typo): correct typo in Xqci extension description (#1214)

Fixed a spelling error from 'microontrollers' to 'microcontrollers' in
the description of the Xqci extension.

Signed-off-by: Brian 'redbeard' Harrington <[email protected]>

Author: brianredbeard

spec/custom/isa/qc_iu/ext/Xqci.yaml

@@ -469,7 +469,7 @@ versions:
     version: ">= 1.0.0"
 description: |
   The Xqci extension includes a set of instructions that improve RISC-V code density and
-  performance in microontrollers. It fills several gaps:
+  performance in microcontrollers. It fills several gaps:
 
   Long immediates::
   --