ring-buffer: Fix two typos in comments

s/inerrupting/interrupting/
s/beween/between/

Link: https://lkml.kernel.org/r/20201014152749.29986-1-hqjagain@gmail.com



Signed-off-by: Qiujun Huang <hqjagain@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>