Update pheno006/README.md

Co-authored-by: Eric Earl <[email protected]>

Author: Arshitha

pheno006/README.md

@@ -1,6 +1,6 @@
 # Pheno006 example dataset: Two sessions with one imaging-only session. No sessions files
 
-This dataset contains imaging and phenotypic data from the baseline session and phenotypic data from followup sessions. This an example of a case where adding sessions files does not provide any new information. In other, sessions files is not necessary. The file tree is as follows:
+This dataset contains imaging and phenotypic data from the baseline session and phenotypic data from followup sessions. This an example of a case where adding sessions files does not provide any new information. In other words, a sessions file is not strictly necessary here. The file tree is as follows:
 
 ```bash
 pheno006