Improve wording

    `Postgres-checkup. Project: 'XXX'. Database: 'YYY'` → `PostgreSQL Checkup. Project: 'XXX'. Database: 'YYY'`

    In the F002 "Transaction wraparound check" report:
        - `Per instance` → `Databases`
        -`Per database` → `Tables in the observed database`

Author: NikolayS

checkup

@@ -731,7 +731,7 @@ glue_md_reports() {
   [[ "${FILE}" != "None" ]] && return 0
 
   # make header
-  echo "# Postgres-checkup. Project: '${PROJECT}'. Database: '${DBNAME}'" > "${out_fname}"
+  echo "# PostgreSQL Checkup. Project: '${PROJECT}'. Database: '${DBNAME}'" > "${out_fname}"
   echo "## Epoch number: '${EPOCH}'" >> "${out_fname}"
   echo "NOTICE: while most reports describe the “current database”, some of them may contain cluster-wide information describing all databases in the cluster." >> "${out_fname}"
   echo >> "${out_fname}"

pghrep/templates/F002.tpl

@@ -4,7 +4,7 @@
 {{ if .hosts.master }}
 ### Master (`{{.hosts.master}}`) ###
 {{ if index (index (index .results .hosts.master) "data") "per_instance" }}
-#### Per instance ####
+#### Databases ####
  Database | ▼ Age | Capacity used, % | Warning | datfrozenxid
 ----------|-----|------------------|---------|--------------
 {{ range $i, $key := (index (index (index (index .results .hosts.master) "data") "per_instance") "_keys") }}
@@ -18,7 +18,7 @@
 {{- end -}}{{/* if per_instance exists */}}
 
 {{/* if index (index (index .results .hosts.master) "data") "per_database" */}}
-#### Per database ####
+#### Tables in the observed database ####
  Relation | Age | ▼ Capacity used, % | Warning |rel_relfrozenxid | toast_relfrozenxid 
 ----------|-----|------------------|---------|-----------------|--------------------
 {{ range $i, $key := (index (index (index (index .results .hosts.master) "data") "per_database") "_keys") }}