Formatted all pages according to guidelines.

pages/common/test.md

@@ -3,22 +3,22 @@
 > Evaluate condition.
 > If it is true, returns 0 exit status, otherwise returns 1.
 
-- Test if given variable is equal to given string
+- Test if given variable is equal to given string:
 
 `test $MY_VAR == '/bin/zsh'`
 
-- Test if given variable is empty
+- Test if given variable is empty:
 
 `test -z $GIT_BRANCH`
 
-- Test if file exists
+- Test if file exists:
 
 `test -e {{filename}}`
 
-- Test if directory not exists
+- Test if directory not exists:
 
 `test ! -d {{path/to/directory}}`
 
-- If-else statement
+- If-else statement:
 
 `test {{condition}} && echo "true" || echo "false"`