Fix rendering of the issue form (#165)

Enclose the command in a codeblock.

Fixes the rendering issue of the form

Img : https://i.imgur.com/HOJ47Ql.png

Author: signed-log

.github/ISSUE_TEMPLATE/01_bug_report.yml

@@ -12,7 +12,7 @@ body:
     attributes:
       label: Environment
       description: >
-        Please describe your environment e.g: echo "OSTYPE=${OSTYPE} CPUTYPE=$(uname -m) / MACHINE_TYPE=$MACHTYPE ZSH_VERSION=${ZSH_VERSION}"
+        Please describe your environment e.g: `echo "OSTYPE=${OSTYPE} CPUTYPE=$(uname -m) / MACHINE_TYPE=$MACHTYPE ZSH_VERSION=${ZSH_VERSION}"`
 
         It may contain any additional information which would help to reproduce the issue.
       placeholder: "OSTYPE=linux-gnu CPUTYPE=x86_64 / MACHINE_TYPE=x86_64 ZSH_VERSION=5.8"