feat: refresh catalog docs

docs/tables/mpe_datacatalog_cats.md

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+---
+layout: article
+title: MPE_DATACATALOG_CATS
+description: The MPE_DATACATALOG_CATS table contains all the catalogs available in each library
+---
+
+# MPE_DATACATALOG_CATS
+
+The `MPE_DATACATALOG_CATS` table contains the catalogs available in each library.
+
+More frequently changing attributes are stored in [MPE_DATASTATUS_CATS](/mpe_datastatus_cats).
+
+To trigger a scan, see the Refresh Data Catalog [instructions](https://docs.datacontroller.io/admin-services/#refresh-data-catalog).
+
+## Columns
+
+ - `TX_FROM num`: SCD2 open datetime
+ - 🔑 `TX_TO num`: SCD2 close datetime
+ - 🔑 `LIBREF char(8)`: SAS Libref (8 chars)
+ - 🔑 `MEMNAME char(64)`: The catalog member name