Clean up Vault docs in User Guide. (#46188)

* Fix spelling of 'separate' throughout.

* Various cleanups in the User Guide for Vault.

- Fix spelling of 'algorithm'
- Fix indentation of nested list in payload format
- Fix mysterious refernce to 'b_pkey1'.
- Fix reference to newline as '\n': the backslash is lost when rendered
to the docs website. Specify the hex value for newline instead of the
backslash escape.

* Fix formatting

* Update vault.rst

lib/ansible/modules/network/iosxr/iosxr_interface.py

@@ -74,7 +74,7 @@ options:
   aggregate:
     description:
       - List of Interface definitions. Include multiple interface configurations together,
-        one each on a seperate line
+        one each on a separate line
   delay:
     description:
       - Time in seconds to wait before checking for the operational state on remote

lib/ansible/modules/network/junos/junos_facts.py

@@ -354,7 +354,7 @@ def main():
     runable_subsets.difference_update(exclude_subsets)
     runable_subsets.add('default')
 
-    # handle fetching old style facts seperately
+    # handle fetching old style facts separately
     runable_subsets.discard('ofacts')
 
     facts = dict()

lib/ansible/modules/windows/win_audit_rule.py

@@ -36,7 +36,7 @@ options:
     required: yes
   rights:
     description:
-      - Comma seperated list of the rights desired. Only required for adding a rule.
+      - Comma separated list of the rights desired. Only required for adding a rule.
       - If I(path) is a file or directory, rights can be any right under MSDN
         FileSystemRights U(https://msdn.microsoft.com/en-us/library/system.security.accesscontrol.filesystemrights.aspx).
       - If I(path) is a registry key, rights can be any right under MSDN
@@ -63,7 +63,7 @@ options:
   audit_flags:
     description:
       - Defines whether to log on failure, success, or both.
-      - To log both define as comma seperated list "Success, Failure".
+      - To log both define as comma separated list "Success, Failure".
     required: yes
     type: list
     choices: [ Failure, Success ]