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/kubectl-get.md

@@ -7,26 +7,26 @@
 
 `kubectl get namespaces`
 
-- Get nodes in a specified namespace:
+- Get nodes in a specified [n]amespace:
 
-`kubectl get nodes -n {{namespace}}`
+`kubectl get nodes --namespace {{namespace}}`
 
-- Get pods in a specified namespace:
+- Get pods in a specified [n]amespace:
 
-`kubectl get pods -n {{namespace}}`
+`kubectl get pods --namespace {{namespace}}`
 
-- Get deployments in a specified namespace:
+- Get deployments in a specified [n]amespace:
 
-`kubectl get deployments -n {{namespace}}`
+`kubectl get deployments --namespace {{namespace}}`
 
-- Get services in a specified namespace:
+- Get services in a specified [n]amespace:
 
-`kubectl get services -n {{namespace}}`
+`kubectl get services --namespace {{namespace}}`
 
-- Get all resources in a specified namespace:
+- Get all resources in a specified [n]amespace:
 
-`kubectl get all -n {{namespace}}`
+`kubectl get all --namespace {{namespace}}`
 
-- Get Kubernetes objects defined in a YAML manifest:
+- Get Kubernetes objects defined in a YAML manifest [f]ile:
 
-`kubectl get -f {{path/to/manifest.yaml}}`
+`kubectl get --file {{path/to/manifest.yaml}}`