Update links to examples

Author: Bellangelo

versions/3.0.0.md

@@ -1821,7 +1821,7 @@ The key value used to identify the callback object is an expression, evaluated a
 ##### Patterned Fields
 Field Pattern | Type | Description
 ---|:---:|---
-<a name="callbackExpression"></a>{expression} | [Path Item Object](#pathItemObject) | A Path Item Object used to define a callback request and expected responses.  A [complete example](../examples/v3.0/callback-example.yaml) is available.
+<a name="callbackExpression"></a>{expression} | [Path Item Object](#pathItemObject) | A Path Item Object used to define a callback request and expected responses.  A [complete example](https://github.com/OAI/learn.openapis.org/tree/main/examples/v3.0/callback-example.yaml) is available.
 
 This object MAY be extended with [Specification Extensions](#specificationExtensions).
 

versions/3.0.1.md

@@ -1821,7 +1821,7 @@ The key value used to identify the callback object is an expression, evaluated a
 ##### Patterned Fields
 Field Pattern | Type | Description
 ---|:---:|---
-<a name="callbackExpression"></a>{expression} | [Path Item Object](#pathItemObject) | A Path Item Object used to define a callback request and expected responses.  A [complete example](../examples/v3.0/callback-example.yaml) is available.
+<a name="callbackExpression"></a>{expression} | [Path Item Object](#pathItemObject) | A Path Item Object used to define a callback request and expected responses.  A [complete example](https://github.com/OAI/learn.openapis.org/tree/main/examples/v3.0/callback-example.yaml) is available.
 
 This object MAY be extended with [Specification Extensions](#specificationExtensions).
 

versions/3.0.2.md

@@ -1843,7 +1843,7 @@ The key value used to identify the callback object is an expression, evaluated a
 ##### Patterned Fields
 Field Pattern | Type | Description
 ---|:---:|---
-<a name="callbackExpression"></a>{expression} | [Path Item Object](#pathItemObject) | A Path Item Object used to define a callback request and expected responses.  A [complete example](../examples/v3.0/callback-example.yaml) is available.
+<a name="callbackExpression"></a>{expression} | [Path Item Object](#pathItemObject) | A Path Item Object used to define a callback request and expected responses.  A [complete example](https://github.com/OAI/learn.openapis.org/tree/main/examples/v3.0/callback-example.yaml) is available.
 
 This object MAY be extended with [Specification Extensions](#specificationExtensions).
 

versions/3.0.3.md

@@ -1847,7 +1847,7 @@ The key value used to identify the path item object is an expression, evaluated
 ##### Patterned Fields
 Field Pattern | Type | Description
 ---|:---:|---
-<a name="callbackExpression"></a>{expression} | [Path Item Object](#pathItemObject) | A Path Item Object used to define a callback request and expected responses.  A [complete example](../examples/v3.0/callback-example.yaml) is available.
+<a name="callbackExpression"></a>{expression} | [Path Item Object](#pathItemObject) | A Path Item Object used to define a callback request and expected responses.  A [complete example](https://github.com/OAI/learn.openapis.org/tree/main/examples/v3.0/callback-example.yaml) is available.
 
 This object MAY be extended with [Specification Extensions](#specificationExtensions).
 

versions/3.0.4.md

@@ -1863,7 +1863,7 @@ The key value used to identify the path item object is an expression, evaluated
 ##### Patterned Fields
 Field Pattern | Type | Description
 ---|:---:|---
-<a name="callbackExpression"></a>{expression} | [Path Item Object](#pathItemObject) | A Path Item Object used to define a callback request and expected responses.  A [complete example](../examples/v3.0/callback-example.yaml) is available.
+<a name="callbackExpression"></a>{expression} | [Path Item Object](#pathItemObject) | A Path Item Object used to define a callback request and expected responses.  A [complete example](https://github.com/OAI/learn.openapis.org/tree/main/examples/v3.0/callback-example.yaml) is available.
 
 This object MAY be extended with [Specification Extensions](#specificationExtensions).