docs: Fix broken link from unpack parser to pack stage (#6207)

and make hyperlinks more obvious

Signed-off-by: Christian Haudum <christian.haudum@gmail.com>

docs/sources/clients/promtail/stages/pack.md

@@ -57,7 +57,7 @@ This would create a log line
 }
 ```
 
-**Loki 2.2 also includes a new [`unpack`](../../../../logql/log_queries/#unpack) parser to work with the pack stage.**
+**Loki 2.2 also includes a new [`unpack` parser]({{< relref "../../../logql/log_queries.md#unpack" >}}) to work with the pack stage.**
 
 For example:
 

docs/sources/logql/log_queries.md

@@ -476,7 +476,7 @@ those labels:
 
 #### unpack
 
-The `unpack` parser parses a JSON log line, unpacking all embedded labels in the [`pack`](../clients/promtail/stages/pack/) stage.
+The `unpack` parser parses a JSON log line, unpacking all embedded labels from Promtail's [`pack` stage]({{< relref "../clients/promtail/stages/pack.md" >}}).
 **A special property `_entry` will also be used to replace the original log line**.
 
 For example, using `| unpack` with the log line: