Fix typos

PR #2263 <https://github.com/Genymobile/scrcpy/pull/2263>

Signed-off-by: Romain Vimont <rom@rom1v.com>

app/src/util/str_util.h

@@ -16,7 +16,7 @@ size_t
 xstrncpy(char *dest, const char *src, size_t n);
 
 // join tokens by sep into dst
-// returns the number of chars actually written (max n-1) if no trucation
+// returns the number of chars actually written (max n-1) if no truncation
 // occurred, or n if truncated
 size_t
 xstrjoin(char *dst, const char *const tokens[], char sep, size_t n);