Merge pull request #438 from sstevens2/typo-fix

Typo fix

episodes/01-raster-structure.Rmd

@@ -318,15 +318,15 @@ raster: surface elevation in meters for one time period.
 
 A raster dataset can contain one or more bands. We can use the `rast()`
 function to import one single band from a single or multi-band raster. We can
-view the number of bands in a raster using the `nly()` function.
+view the number of bands in a raster using the `nlyr()` function.
 
 ```{r view-raster-bands}
 nlyr(DSM_HARV)
 ```
 
 However, raster data can also be multi-band, meaning that one raster file
 contains data for more than one variable or time period for each cell. By
-default the `raster()` function only imports the first band in a raster
+default the `rast()` function only imports the first band in a raster
 regardless of whether it has one or more bands. Jump to a later episode in
 this series for information on working with multi-band rasters:
 [Work with Multi-band Rasters in R](05-raster-multi-band-in-r/).