Compatibility -> Limitations (#357)

* Compatibility -> Limitations

Switch from Compatibility to Limitations.
Also mention some limitations in this page.

* Update motlp.md

---------

Co-authored-by: Fabrizio Ferri-Benedetti <[email protected]>

Author: lucabelluccini

docs/reference/motlp.md

@@ -50,9 +50,11 @@ To send data in OTLP format to the {{motlp}}, you need to configure your {{edot}
 
 Refer to the [Quickstart guides](/reference/quickstart/index.md) for more information.
 
-## Compatibility
+## Limitations
 
 The {{motlp}} does not currently support these features:
 
 * Tail-based sampling (TBS)
 * Universal Profiling
+* Only supports histograms with delta temporality. Cumulative histograms are dropped.
+* Latency distributions based on histogram values have limited precision due to the fixed boundaries of explicit bucket histograms.