Remove hardcoded fee example, and fix crash in PT-BR strings
<string name="patchnotes_v23"><![CDATA[
<h4>Fee increase for new channels</h4>
<p>The fee rate for new channels stays the same (%1$s%%), but there is now a <b>%2$s</b> minimum fee.</p>
- <p>If someone sends you 15 000 sat and you don\'t have any channels, a new channel will be created and you will receive 14 000 sat.</p>
]]></string>
<string name="paymentmode_onchain">Pay on-chain</string>
