Created Placeholders (markdown)

Placeholders.md

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+Placeholders are supported in `text` entries of the config.
+
+## Internal placeholders
+
+`<placeholder:displayname>` - displays player's display name.
+
+`<placeholder:name>` - displays player's actual name.
+
+## PlaceholderAPI placeholders
+
+Plugin configuration supports all PAPI placeholders in `<placeholder:papi_placeholder_without_%>`.
+
+Example:
+
+```yaml
+text: "<placeholder:player_displayname>"
+```