Fix lineinfile docs formatting

lineinfile

@@ -21,7 +21,7 @@
 import re
 import os
 
-DOCUMENTATION = '''
+DOCUMENTATION = """
 ---
 module: lineinfile
 author: Daniel Hokka Zakrisson
@@ -64,7 +64,7 @@ options:
         after the specified regular expression. Two special values are
         available; C(BOF) for inserting the line at the beginning of the
         file, and C(EOF) for inserting the line at the end of the file.
-    choices: [ BOF, EOF, *regex* ]
+    choices: [ 'BOF', 'EOF', '*regex*' ]
     default: EOF
   create:
     required: false
@@ -81,10 +81,10 @@ options:
        - Create a backup file including the timestamp information so you can
          get the original file back if you somehow clobbered it incorrectly.
 examples:
-   - code: "lineinfile: dest=/etc/selinux/config regexp=^SELINUX= line=SELINUX=disabled"
+   - code: 'lineinfile: dest=/etc/selinux/config regexp=^SELINUX= line=SELINUX=disabled'
    - code: 'lineinfile: dest=/etc/sudoers state=absent regexp="^%wheel"'
    - code: 'lineinfile: dest=/etc/httpd/conf/httpd.conf regexp="^Listen " insertafter="^#Listen " line="Listen 8080"'
-'''
+"""
 
 def present(module, dest, regexp, line, insertafter, create, backup):