Update doc/source/user/workbench.rst

Co-authored-by: Paul Romano <[email protected]>

doc/source/user/workbench.rst

@@ -53,7 +53,7 @@ The `plugins` block is required. Within the `plugins` blocks are
             exec_dir = SAM_DIR
             exec_name = "sam-opt"
             extra_inputs=["file1", "file2", "file3"]
-            extra_templat_inputs=["template1", "template2", "template3"]
+            extra_template_inputs=["template1", "template2", "template3"]
             show_stderr = False
             show_stdout = False
         }