Fix unclosed <h1> tag and finish Fogwawe→Fogwave rename

The unclosed <h1 align="center"> was swallowing the rest of the
README into one giant heading. Also updated the remaining
Fogwawe references (icon alt text, LICENSE notices, CHANGELOG repo
links) to Fogwave to match the renamed repository — actual release
asset filenames (Fogwawe-vX.X.X.apk) are left untouched since they
were already uploaded under the old name.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015g6ECVSKcBG8CJPrqC3G5o

LICENSE

@@ -631,8 +631,8 @@ to attach them to the start of each source file to most effectively
 state the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
 
-    Fogwawe
-    Copyright (C) 2026  Fogwawe contributors
+    Fogwave
+    Copyright (C) 2026  Fogwave contributors
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -652,7 +652,7 @@ Also add information on how to contact you by electronic and paper mail.
   If the program does terminal interaction, make it output a short
 notice like this when it starts in an interactive mode:
 
-    Fogwawe  Copyright (C) 2026  Fogwawe contributors
+    Fogwave  Copyright (C) 2026  Fogwave contributors
     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
     This is free software, and you are welcome to redistribute it
     under certain conditions; type `show c' for details.