use correct context

vignettes/Introduction_to_metabolomicsWorkbenchR.Rmd

@@ -110,7 +110,7 @@ Valid contexts, input items and output items can be listed using the `names` fun
 
 ```{r}
 # valid contexts
-names(context) # context, input_item or output_item
+names(metabolomicsWorkbenchR::context) # context, input_item or output_item
 ```
 
 Valid inputs and outputs for a context can be displayed by accessing the list of context objects. Valid inputs for a particular output can also be displayed by accessing the list of output item objects. Use of `metabolmicsWorkbenchR` objects is detailed in a later section. In addition, functions `context_inputs`, `context_outputs` and `input_example` are provided for convenience.
@@ -227,15 +227,15 @@ The name of all valid contexts can be displayed:
 
 ```{r}
 # list all context names
-names(context)
+names(metabolomicsWorkbenchR::context)
 ```
 
 Information about a specific context can be obtained using the show method for a
 an `mw_context` object:
 
 ```{r}
 # list valid inputs/outputs for the "study" context
-context$study
+metabolomicsWorkbenchR::context$study
 ```
 ## Input / Output Items
 Once the context of the search has been decided upon valid inputs and outputs can