Update release notes to trigger new CI check

Author: ovitrif

RELEASE-NOTES.txt

@@ -3,7 +3,7 @@
 20.6
 -----
 * [*] Login: Fix an issue preventing some users to log-in in with email addresses containing a single quote [https://github.com/wordpress-mobile/WordPress-Android/pull/15526]
-* [*] Fix a possible crash with themes preloading that could be encountered at the start of Site Creation [https://github.com/wordpress-mobile/WordPress-Android/pull/17022]
+* [*] Fix a possible crash with themes preloading at the start of Site Creation [https://github.com/wordpress-mobile/WordPress-Android/pull/17022]
 
 20.5
 -----