Update documentation (#595)

Author: vadim-kharin-codefresh

incubating/codefresh-report-image/step.yaml

@@ -163,7 +163,7 @@ spec:
         },
         "CF_JIRA_PROJECT_PREFIX": {
           "type": "string",
-          "description": "Jira prefix for identifying the ticket number to use. (i.e. CR)"
+          "description": "Jira prefix for identifying the ticket number to use. Specify one or more prefixes as a comma-separated list or as a regex. (i.e. CR, /[A-Z]{2,}-\\d+/g)"
         },
         "CF_REGISTRY_DOMAIN": {
           "type": "string",

incubating/jira-issue-extractor/step.yaml

@@ -60,7 +60,7 @@ spec:
         "properties": {
             "JIRA_PROJECT_PREFIX": {
                 "type": "string",
-                "description": "Jira project prefix like: SAAS,CF, etc"
+                "description": "Jira project prefix. Specify one or more prefixes as a comma-separated list or as a regex. (/[A-Z]{2,}-\\d+/g,SAAS,CF, etc)"
             },
             "MESSAGE": {
                 "type": "string",