pages/*: fix small typos (#11831)

* pages/*: fix small typos

* Update ssh-copy-id.md

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

* ansible-inventory: fix typo

* Update pages/linux/zathura.md

Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>

* gcloud: fix typo

* fdesetup: mark as placeholder

* icalbuddy: use general placeholder

* ip: make it a placeholder

* git-svn: fix typo

* pages/*: fix typos

* kubectl-get: add mnemonics and long options

* kubectl-describe: add mnemonics and long options

* pip-install: use short option

* Update icalbuddy.md

Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>

---------

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>
Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>

pages/common/ssh-copy-id.md

@@ -5,7 +5,7 @@
 
 - Copy your keys to the remote machine:
 
-`ssh-copy-id {{username@remote_host}}`
+`ssh-copy-id {{username}}@{{remote_host}}`
 
 - Copy the given public key to the remote: