parse also *.yml file suffix as YAML; closes #1958 (#1959)

previously only files with *.yaml suffix were recognized as YAML

components/templates/src/global_fns/load_data.rs

@@ -61,7 +61,7 @@ impl FromStr for OutputFormat {
             "bibtex" => Ok(OutputFormat::Bibtex),
             "xml" => Ok(OutputFormat::Xml),
             "plain" => Ok(OutputFormat::Plain),
-            "yaml" => Ok(OutputFormat::Yaml),
+            "yaml" | "yml" => Ok(OutputFormat::Yaml),
             format => Err(format!("Unknown output format {}", format).into()),
         }
     }

docs/content/documentation/templates/overview.md

@@ -259,7 +259,7 @@ The method returns a map containing `width`, `height` and `format` (the lowercas
 
 ### `load_data`
 
-Loads data from a file, URL, or string literal. Supported file types include *toml*, *json*, *csv*, *bibtex*, *yaml* 
+Loads data from a file, URL, or string literal. Supported file types include *toml*, *json*, *csv*, *bibtex*, *yaml*/*yml*, 
 and *xml* and only supports UTF-8 encoding.
 
 Any other file type will be loaded as plain text.