simplify example, show another workaround

Author: mr-c

_extras/miscellaneous.md

@@ -171,9 +171,9 @@ outputs:
     outputSource: first/txt
 ```
 
-### There is a error, but only using Paramter Reference.
+### CWL Paramter Reference error due to hyphen in input identifier
 
-`cwltool --validate` is return valid.
+If `cwltool --validate` returns valid
 
 ```console
 $ cwltool --validate cwl/qiime.cwl
@@ -182,42 +182,30 @@ INFO Resolved 'cwl/qiime.cwl' to 'file:///workspace/cwl/qiime.cwl'
 cwl/qiime.cwl is valid CWL.
 ```
 
-But execute it causes error.
+But executing it causes an error like:
 
-```
-cwltool cwl/qiime.cwl --sample-input metadata.tsv 
+```console
+$ cwltool cwl/qiime.cwl --sample-input metadata.tsv 
 INFO /usr/local/bin/cwltool 1.0.20190831161204
 INFO Resolved 'cwl/qiime.cwl' to 'file:///workspace/cwl/qiime.cwl'
 ERROR Workflow error, try again with --debug for more information:
 cwl/qiime.cwl:14:5: Expression evaluation error:
                     Syntax error in parameter reference '(inputs.sample-input)'. This could be due
                     to using Javascript code without specifying InlineJavascriptRequirement.
-$
 ```
 
 The file is here
 
 ```cwl
 cwlVersion: v1.0
 class: CommandLineTool
-hints:
-  DockerRequirement:
-    dockerPull: qiime2/core:2019.7
 baseCommand: [qiime, metadata, tabulate]
 arguments:
   - prefix: --m-input-file
     valueFrom: $(inputs.sample-input)
-  - prefix: --o-visualization
-    valueFrom: metadata.qzv
 inputs:
-  # for metadata.tsv
   sample-input: File
-outputs:
-  # metadata.qzv
-  visualization:
-    type: File
-    outputBinding:
-      glob: metadata.qzv
+outputs: []
 ```
 
 Problem caused by `-` (hyphen charcter). 
@@ -233,7 +221,7 @@ inputs:
 ```
 
 
-Fix this error is change `-` (hyphen) to `_` (under score)
+Fix this error is change `-` (hyphen) to `_` (underscore)
 
 ```cwl
 valueFrom: $(inputs.sample_input)
@@ -245,3 +233,9 @@ inputs:
   sample_input: File
       # ^ changed here
 ```
+
+If is not possible to change the input identifier, then you can use an alternative CWL Parameter Reference syntax:
+
+```cwl
+valueFrom: $(inputs["sample-input"])
+```