Fix typo in RTT more information text.

Bug: 76156715
Test: local build
Change-Id: Ib51554b628b22c22b43aa8a52ce8676575975fc1
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 165f053..f728109 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -1189,7 +1189,7 @@
     <string name="rtt_mode_title">Real-time text (RTT) call</string>
     <string name="rtt_mode_summary">Allow messaging within a voice call</string>
     <string name="rtt_mode_more_information">
-       RTT assists callers who are deaf, hard hearing, have a speech disability,
+       RTT assists callers who are deaf, hard of hearing, have a speech disability,
        or need more than voice alone.&lt;br>
        &lt;a href="<xliff:g example="http://www.google.com" id="url">http://support.google.com/mobile?p=telephony_rtt</xliff:g>">Learn more&lt;/a>
        &lt;br>&lt;br> - RTT calls are saved as a message transcript