yaml.adoc in j1-template-2023.7.0

- old
+ new

@@ -1,10 +1,12 @@
 ---
 title:                                  YAML
 tagline:                                Cheatsheet for daily use
+
 date:                                   2023-05-19
 #last_modified:                         2023-01-01
+
 description: >
                                         J1 Template is a Bootstrap V5 website template for the static
                                         site generator Jekyll.
                                         The Cheatsheet discuss YAML Markups for daily use.
                                         YAML (short for "YAML Ain't Markup Language") is a human-readable data
@@ -106,10 +108,11 @@
 on simplicity and machine readability. They have overlapping use cases but
 exhibit some differences in syntax, data types, and readability. JavaScript
 has built-in support for working with JSON data, making it a popular choice
 for handling data exchange in web applications.
 
+
 [role="mt-5"]
 == Scalars
 
 In _YAML_, a *scalar* is a basic data element representing a *single value*.
 Scalars can define strings, numbers, booleans, and null values. Here are
@@ -260,10 +263,11 @@
 TIP: Using HereDocs, you can include long, formatted text blocks in your YAML
 documents without requiring *manual* line concatenation or escaping characters.
 There is a good online previewer for the different heredoc modes at
 link:{yaml-multiline}[YAML Multiline, {browser-window--new}].
 
+
 [role="mt-5"]
 == Sequences (Arrays)
 
 A sequence is a way to represent a *collection* of items. It allows you
 to define an *ordered list* of values, similar to an *array* or a list
@@ -345,10 +349,11 @@
 
 You can nest sequences of sequences to represent more complex structures
 or hierarchical data. Nesting sequences allow you to organize and represent
 data in a structured manner within YAML documents.
 
+
 [role="mt-5"]
 == Hash (Dictionary)
 
 A hash is a data structure used to represent *key-value pairs*. It is also
 known as a mapping or *dictionary* in other programming languages.
@@ -450,9 +455,10 @@
     "nr2": 6
   }
 }
 ----
 ====
+
 
 [role="mt-5"]
 == Content References (Aliases)
 
 In _YAML_, content references are a feature that allows you to reference