Thread trademarck checked and fixed

Author: jcarolinares

content/hardware/_unlisted/boards/nano-matter/features.md

@@ -14,7 +14,7 @@ Thanks to the Nano Matter and its small form factor, you can easily prototype ne
     </FeatureWrapper>
   </Feature>
 
-  <Feature title="OpenThread®" image="communication">
+  <Feature title="OpenThread" image="communication">
     Nano Matter uses Thread for IoT mesh networking communication in a highly compact form factor.
     <FeatureWrapper>
       <FeatureLink title="OpenThread" url="https://openthread.io/" download blank/>

content/hardware/_unlisted/boards/nano-matter/tech-specs.yml

@@ -15,7 +15,7 @@ Connectivity:
   Matter: Matter-ready Smart Home Connectivity
   LR-WPANs: IEEE 802.15.4 w/ Thread
   Bluetooth®: Bluetooth® 5.3 & Bluetooth® Mesh
-Additional Compatible Protocols: Zigbee & OpenThread
+Additional Compatible Protocols: OpenThread
 Connectivity Band Frequency: On-board 2.4 GHz
 Secure element: Secure Vault High
 Analog-to-digital converter (ADC):
@@ -49,4 +49,4 @@ Memory:
 Dimensions:
   Width: 18 mm
   Length: 45 mm
-Environmental temperature: -40 °C to + 85 °C (-40 °F to 185 °F)
+Environmental temperature: -40 °C to + 85 °C