Fix transparent page grep

[4SH-gaupee]

SUMMARY

"[" char should be escaped in the grep command or else it will print every char even when transparent page is set to always:

ISSUE TYPE

• Bugfix Pull Request

COMPONENT NAME

community.mongodb.mongodb_linux

ADDITIONAL INFORMATION

Content of test file

$ cat /tmp/never 
[always] never

$ grep -o '[never]' /tmp/never 
n
e
v
e
r

$ grep -o '\[never\]' /tmp/never
$