Correct links for 'Release Notes' and 'Contributing' in nav bar

- Minor fixes

docs/refmans/gui/viselements/generic/date_range.md_template

@@ -55,7 +55,7 @@ An `on_change` callback can be set to retrieve the user's selection:
 def on_change(s: State, name: str, value: any):
     if name == "dates":
         # value[0] is set to the first selected date
-        # value[1] is set to the first selected date
+        # value[1] is set to the second selected date
 ```
 
 ## Selecting a range with times {data-source="gui:doc/examples/controls/date_range_with_time.py"}

docs/refmans/gui/viselements/generic/dialog.md_template

@@ -155,16 +155,17 @@ This definition indicates that:
 Here’s how you can implement the *dialog_action()* function to handle the button presses:
 ```python
 def dialog_action(state, _, payload):
-    if payload["args"][0] == 0:
-        ... # The first button was pressed
-    elif payload["args"][0] == 1:  # Second button
-        ... # The second button was pressed
-    else:  # Close button (index == -1)
-        ... # The dialog's Close button was pressed
+    if payload["args"][0] == 0:  # The first button was pressed
+        ...
+    elif payload["args"][0] == 1:  # The second button was pressed
+        ...
+    else:  # The dialog's Close button was pressed (index == -1)
+        ...
     state.show_dialog = False
 ```
 
 The *payload["args"]\[0\]* value indicates which button was pressed:
+
 - 0: The first button ("Couldn't be better") was pressed.
 - 1: The second button ("Not my day") was pressed.
 - -1: The Close button of the dialog was pressed.
@@ -178,8 +179,8 @@ When *show_dialog* is set to True, the dialog will display two buttons at the bo
     <figcaption>Automatic buttons</figcaption>
 </figure>
 
-If the user presses the first button, "COULDN'T BE BETTER", the *dialog_action()* callback will be
-invoked with *payload["args"]\[0\]* set to 0.
+If the user presses the first button, "COULDN'T BE BETTER", the *dialog_action()* callback function
+is invoked with *payload["args"]\[0\]* set to 0.
 
 ## Dialog with page
 

taipy_theme/partials/header.html

@@ -91,12 +91,12 @@
           <div class="md-grid">
             <ul class="md-tabs__list">
               <li class="md-tabs__item">
-                <a href="{{ config.site_url }}release-notes/" class="md-tabs__link">
+                <a href="http://TAIPY_DOCS_URL/release-notes/" class="md-tabs__link">
                   Release Notes
                 </a>
               </li>
               <li class="md-tabs__item">
-                <a href="{{ config.site_url }}contributing/" class="md-tabs__link">
+                <a href="http://TAIPY_DOCS_URL/contributing/" class="md-tabs__link">
                   Contributing
                   </a>
               </li>