Fix broken links in learning_objectives.md after section renumbering

Author: solomon.legodi

website/docs/learning_objectives.md

@@ -128,9 +128,9 @@
 | [`LO-5.1.2.3`](chapter-05/01_advanced_variables.md#5123--testtask-scope) | K1 | Recall how to define test\|task variables and where they can be accessed |
 | [`LO-5.1.2.4`](chapter-05/01_advanced_variables.md#5124--local-scope) | K1 | Recall how to define local variables and where they can be accessed |
 | [`LO-5.1.4.2`](chapter-05/01_advanced_variables.md#5142-accessing-dictionary-variables) | K1 | Recall that `@{list}` unpacks the values of a list variable when accessed |
-| [`LO-5.1.5.1`](None) | K1 | Recall that assignments to `&{dict}` variables automatically convert values to Robot Framework Dictionaries and enable dot-access |
-| [`LO-5.1.5.2`](None) | K1 | Recall that `&{dict}` unpacks to multiple key=value pairs when accessed |
-| [`LO-5.1.6`](None) | K1 | Recall that Robot Framework provides access to execution information via Built-In variables |
+| [`LO-5.1.5.1`](chapter-05/01_advanced_variables.md#5151-assigning-dictionary-variables) | K1 | Recall that assignments to `&{dict}` variables automatically convert values to Robot Framework Dictionaries and enable dot-access |
+| [`LO-5.1.5.2`](chapter-05/01_advanced_variables.md#5152-accessing-dictionary-variables) | K1 | Recall that `&{dict}` unpacks to multiple key=value pairs when accessed |
+| [`LO-5.1.6`](chapter-05/01_advanced_variables.md#516-built-in-variables) | K1 | Recall that Robot Framework provides access to execution information via Built-In variables |
 | [`LO-5.2.1`](chapter-05/02_control_structures.md#521-if-statements) | K2 | Understand the purpose and basic concept of IF-Statements |
 | [`LO-5.2.4`](chapter-05/02_control_structures.md#524-for-loops) | K2 | Understand the purpose and basic concept of FOR Loops |
 | [`LO-5.2.5`](chapter-05/02_control_structures.md#525-while-loops) | K2 | Understand the purpose and basic concept of WHILE Loops |