Various fixes for typos found by lintian (#3705)

src/nspawn/nspawn.c

@@ -2873,7 +2873,7 @@ static int outer_child(
                         if (l < 0)
                                 return log_error_errno(errno, "Failed to recv UID shift: %m");
                         if (l != sizeof(arg_uid_shift)) {
-                                log_error("Short read while recieving UID shift.");
+                                log_error("Short read while receiving UID shift.");
                                 return -EIO;
                         }
                 }