Add example links for less_than and greater_than

See: b47fcb62215964b97f144817fca6110e942548e1
metafacture/metafacture-playground@b47fcb6

metafacture/metafacture-playground@892e3ad

Author: TobiasNx

README.md

@@ -1296,6 +1296,9 @@ if exists("<sourceField>")
 
 Executes the functions if/unless the field value is greater than the given value.
 
+
+[Example in Playground](https://metafacture.org/playground/?example=greater_than)
+
 [Java Code](https://github.com/search?type=code&q=repo:metafacture/metafacture-core+path:FixConditional.java+"+greater_than+{")
 
 #### `in`
@@ -1378,6 +1381,8 @@ Executes the functions if/unless the field value equals `true` or `1`.
 
 Executes the functions if/unless the field value is less than the given value.
 
+[Example in Playground](https://metafacture.org/playground/?example=less_than)
+
 [Java Code](https://github.com/search?type=code&q=repo:metafacture/metafacture-core+path:FixConditional.java+"+less_than+{")
 
 #### `match`