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/attributes.py

@@ -32,14 +32,14 @@ attributes:
     INFO_MODULE = r'''
 options: {}
 attributes:
-    check_mode:
-      support: full
-      details:
-        - This action does not modify state.
-    diff_mode:
-      support: N/A
-      details:
-        - This action does not modify state.
+  check_mode:
+    support: full
+    details:
+      - This action does not modify state.
+  diff_mode:
+    support: N/A
+    details:
+      - This action does not modify state.
 '''
 
     CONN = r"""
@@ -64,16 +64,16 @@ attributes:
     FACTS_MODULE = r'''
 options: {}
 attributes:
-    check_mode:
-      support: full
-      details:
-        - This action does not modify state.
-    diff_mode:
-      support: N/A
-      details:
-        - This action does not modify state.
-    facts:
-      support: full
+  check_mode:
+    support: full
+    details:
+      - This action does not modify state.
+  diff_mode:
+    support: N/A
+    details:
+      - This action does not modify state.
+  facts:
+    support: full
 '''
 
     FILES = r"""