add description for jumping tag

Author: yudonglin

vns-docs/docs/tutorials/tags/block.md

@@ -1,7 +1,5 @@
 # Block:
 
-`[block]`
-
 Prevents the player from returning to the previous conversation.
 
 ### Syntax

vns-docs/docs/tutorials/tags/jump.md

@@ -0,0 +1,11 @@
+# Jump:
+
+Jump to a specific label.
+
+### Syntax
+
+```
+[jump]label_name
+```
+
+- *label_name* is the target label the script will jump to.

vns-docs/docs/tutorials/tags/jump_.md

@@ -0,0 +1,12 @@
+# Jump_:
+
+Jump to a specific label, but unlike a regular jump, the target dialogue cannot return to the parent dialogue from which it originated.
+
+### Syntax
+
+```
+[jump_]label_name
+```
+
+- *label_name* is the target label the script will jump to.
+

vns-docs/mkdocs.yml

@@ -13,6 +13,8 @@ nav:
   - '[scene]': tutorials/tags/scene.md
   - '[option]/[opt]': tutorials/tags/option.md
   - '[label]': tutorials/tags/label.md
+  - '[jump/jmp]': tutorials/tags/jump.md
+  - '[jump_/jmp_]': tutorials/tags/jump_.md
   - '[end]': tutorials/tags/end.md
   - '[block]': tutorials/tags/block.md
 - Comments and Notes: tutorials/comments_and_notes.md