Correct name for LinuxServer

Nothing important, but it's LinuxServer not Linuxuser.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -31,7 +31,7 @@ If applicable, add screenshots to help explain your problem.
  - OS: [e.g. Windows 10/Raspberry Pi OS]
  - Python version: [e.g. python2.7]
  - Calibre-Web version: [e.g. 0.6.8 or 087c4c59 (git rev-parse --short HEAD)]:
- - Docker container: [None/Technosoft2000/Linuxuser]:
+ - Docker container: [None/Technosoft2000/LinuxServer]:
  - Special Hardware: [e.g. Rasperry Pi Zero]
  - Browser: [e.g. Chrome 83.0.4103.97, Safari 13.3.7, Firefox 68.0.1 ESR]