[release-v2.7] docs: Fix broken link to metrics generator from span metrics doc. (#4775)

* docs: Fix broken link to metrics generator from span metrics doc. (#4773)

Signed-off-by: Heds Simons <[email protected]>
(cherry picked from commit 70f6095)

* Update docs/sources/tempo/metrics-generator/span_metrics.md

* Update docs/sources/tempo/metrics-generator/span_metrics.md

---------

Co-authored-by: Heds Simons <[email protected]>
Co-authored-by: Kim Nylander <[email protected]>

Author: 3 people

docs/sources/tempo/metrics-generator/span_metrics.md

@@ -90,7 +90,7 @@ When a configured dimension collides with one of the default labels (for example
 
 Custom labeling of dimensions is also supported using the [`dimension_mapping` configuration option](https://grafana.com/docs/tempo/<TEMPO_VERSION>/configuration#metrics-generator).
 
-An optional metric called `traces_target_info` using all resource level attributes as dimensions can be enabled in the [`enable_target_info` configuration option](https://grafana.com/docs/tmepo/<TEMPO_VERSION>/configuration#metrics-generator).
+An optional metric called `traces_target_info` using all resource level attributes as dimensions can be enabled in the [`enable_target_info` configuration option](https://grafana.com/docs/tempo/<TEMPO_VERSION>/configuration#metrics-generator). 
 
 If you use a ratio-based sampler, you can use the custom sampler below to not lose metric information. However, you also need to set `metrics_generator.processor.span_metrics.span_multiplier_key` to `"X-SampleRatio"`.