Adjust YAML in plugin docs (#10234)

* Adjust YAML in plugin docs.

* Update ignore.txt.

* Forgot two indents.

* adjust connection plugins
adjust filter plugins
adjust inventory plugins
adjust lookup plugins

* Re-add YAML document start.

---------

Co-authored-by: Alexei Znamensky <russoz@gmail.com>

plugins/doc_fragments/emc.py

@@ -13,21 +13,21 @@ class ModuleDocFragment(object):
     # Documentation fragment for VNX (emc_vnx)
     EMC_VNX = r'''
 options:
-    sp_address:
-        description:
-            - Address of the SP of target/secondary storage.
-        type: str
-        required: true
-    sp_user:
-        description:
-            - Username for accessing SP.
-        type: str
-        default: sysadmin
-    sp_password:
-        description:
-            - password for accessing SP.
-        type: str
-        default: sysadmin
+  sp_address:
+    description:
+      - Address of the SP of target/secondary storage.
+    type: str
+    required: true
+  sp_user:
+    description:
+      - Username for accessing SP.
+    type: str
+    default: sysadmin
+  sp_password:
+    description:
+      - password for accessing SP.
+    type: str
+    default: sysadmin
 requirements:
   - An EMC VNX Storage device.
   - storops (0.5.10 or greater). Install using C(pip install storops).