Update 02-dataset_integration.Rmd

Co-authored-by: Joshua Shapiro <[email protected]>

scRNA-seq-advanced/02-dataset_integration.Rmd

@@ -740,7 +740,7 @@ However, unlike `fastMNN`, `harmony` does not "back-calculate" corrected express
 For input, `harmony` needs a couple pieces of information:
 
 - First, `harmony` takes a batch-weighted PCA matrix to perform integration.
-We already calculated a batch-weighted PCA matrix (our `merged_PCA` reduced dimension), we'll provide this variable.
+We already calculated a batch-weighted PCA matrix (our `merged_PCA` reduced dimension), we'll provide this as the the input.
 - Second, we need to tell `harmony` about the covariates to use - `sample` and `patient`.
 To do this, we provide two arguments:
   - `meta_data`, a data frame that contains covariates across samples.