Update DataGuide_AAPF_RGB.md

DataGuide_AAPF_RGB.md

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 This document details the file system organization and navigation procedures for accessing both unprocessed RGB image data and the derived phenotypic measurements of the plants captured by the [Ag Alumni Seed Phenotyping Facility (AAPF)](https://ag.purdue.edu/aapf/).
 
-- Masterfile (.xlsx): This file contains a compilation of spreadsheets and a guide document explaining the data contents.
 - Raw Measurement Data: This folder structure houses individual spreadsheets (.csv) and corresponding images (.png) for each measured phenotype.
+- Masterfile (.xlsx): This file contains a compilation of spreadsheets and a guide document explaining the data contents.
 
 
 ### File System Structure