Fixed create map issue

pkg/yqlib/doc/operators/add.md

@@ -56,7 +56,7 @@ yq '.a + null' sample.yml
 ```
 will output
 ```yaml
-[1, 2, null]
+[1, 2]
 ```
 
 ## Append to existing array

pkg/yqlib/doc/operators/boolean-operators.md

@@ -31,8 +31,7 @@ In the yaml 1.2 standard, support for yes/no as booleans was dropped - they are
 
 Given a sample.yml file of:
 ```yaml
-- yes
-- no
+[yes, no]
 ```
 then
 ```bash

pkg/yqlib/doc/operators/create-collect-into-object.md

@@ -56,6 +56,7 @@ will output
 ```yaml
 Mike: cat
 Mike: dog
+---
 Rosey: monkey
 Rosey: sheep
 ```

pkg/yqlib/doc/operators/document-index.md

@@ -85,6 +85,7 @@ will output
 ```yaml
 match: cat
 doc: 0
+---
 match: frog
 doc: 1
 ```

pkg/yqlib/doc/operators/load.md

@@ -158,7 +158,9 @@ yq '. *= load_props("../../examples/small.properties")' sample.yml
 ```
 will output
 ```yaml
-is
+this:
+  is: a properties file
+  cool: ay
 ```
 
 ## Load from base64 encoded file