Update documentation code snippets

docs/docs/v4/ext-strikethrough/README.md

@@ -5,14 +5,15 @@
 This module adds `strikethrough` functionality to `Markwon` via `StrikethroughPlugin`:
 
 ```java
-Markwon.builder(context)
+final Markwon markwon = Markwon.builder(context)
     .usePlugin(StrikethroughPlugin.create())
+    .build();
 ```
 
 This plugin registers `SpanFactory` for `Strikethrough` node, so it's possible to customize Strikethrough Span that is used in rendering:
 
 ```java
-Markwon.builder(context)
+final Markwon markwon = Markwon.builder(context)
         .usePlugin(StrikethroughPlugin.create())
         .usePlugin(new AbstractMarkwonPlugin() {
             @Override
@@ -26,4 +27,5 @@ Markwon.builder(context)
                 });
             }
         })
+        .build();
 ```

docs/docs/v4/ext-tables/README.md

@@ -8,6 +8,7 @@ This extension adds support for GFM tables.
 final Markwon markwon = Markwon.builder(context)
         // create default instance of TablePlugin
         .usePlugin(TablePlugin.create(context))
+        .build();
 ```
 
 ```java
@@ -22,10 +23,11 @@ final TableTheme tableTheme = TableTheme.builder()
 
 final Markwon markwon = Markwon.builder(context)
         .usePlugin(TablePlugin.create(tableTheme))
+        .build();
 ```
 
 ```java
-Markwon.builder(context)
+final Markwon markwon = Markwon.builder(context)
         .usePlugin(TablePlugin.create(builder ->
                 builder
                         .tableBorderColor(Color.RED)
@@ -34,6 +36,7 @@ Markwon.builder(context)
                         .tableHeaderRowBackgroundColor(Color.BLACK)
                         .tableEvenRowBackgroundColor(Color.GREEN)
                         .tableOddRowBackgroundColor(Color.YELLOW)
+        .build();
 ))
 ```
 

docs/docs/v4/ext-tasklist/README.md

@@ -5,8 +5,9 @@
 Adds support for GFM (Github-flavored markdown) task-lists:
 
 ```java
-Markwon.builder(context)
+final Markwon markwon = Markwon.builder(context)
-        .usePlugin(TaskListPlugin.create(context));
+        .usePlugin(TaskListPlugin.create(context))
+        .build();
 ```
 
 ---

docs/docs/v4/image/README.md

@@ -7,6 +7,7 @@ In order to display images in your markdown `ImagesPlugin` can be used.
 ```java
 final Markwon markwon = Markwon.builder(context)
         .usePlugin(ImagesPlugin.create())
+        .build();
 ```
 
 :::tip
@@ -35,6 +36,7 @@ final Markwon markwon = Markwon.builder(context)
                 });
             }
         })
+        .build();
 ```
 
 ```java
@@ -45,6 +47,7 @@ final Markwon markwon = Markwon.builder(context)
                 plugin.addSchemeHandler(DataUriSchemeHandler.create());
             }
         }))
+        .build();
 ```
 
 `ImagesPlugin` comes with a set of predefined scheme-handlers:
@@ -83,6 +86,7 @@ final Markwon markwon = Markwon.builder(context)
                 plugin.addSchemeHandler(FileSchemeHandler.createWithAssets(context));
             }
         }))
+        .build();
 ```
 
 ### DataUriSchemeHandler
@@ -156,6 +160,7 @@ final Markwon markwon = Markwon.builder(context)
                 });
             }
         }))
+        .build();
 ```
 
 Otherwise `SchemeHandler` must return an `InputStream` with proper `content-type` information

docs/docs/v4/syntax-highlight/README.md

@@ -71,4 +71,5 @@ You can extend `Prism4jThemeBase` which has some helper methods
 ```java
 final Markwon markwon = Markwon.builder(context)
         .usePlugin(SyntaxHighlightPlugin.create(prism4j, prism4jTheme))
+        .build();
 ```