Replace place holder 'foo' in remap.doc with 'FIXME'.

Inserted 'FIXME Write missing information' to flag where the
text need to be fixed or rewritten, similar to how FIXME
flags are used in the other adoc files.

Author: petterreinholdtsen

docs/src/remap/remap.adoc

@@ -2314,43 +2314,43 @@ All M-codes from `M200` to `M999` are available for remapping.
 
 === readahead time and execution time
 
-foo
+FIXME Write missing information
 
 === plugin/pickle hack
 
-foo
+FIXME Write missing information
 
 === Module, methods, classes, etc reference
 
-foo
+FIXME Write missing information
 
 == Introduction: Extending Task Execution
 
-foo
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 === Why would you want to change Task Execution?
 
-foo
+FIXME Write missing information
 
 === A diagram: task, interp, iocontrol, UI (??)
 
-foo
+FIXME Write missing information
 
 == Models of Task execution
 
-foo
+FIXME Write missing information
 
 === Traditional iocontrol/iocontrolv2 execution
 
-foo
+FIXME Write missing information
 
 === Redefining IO procedures
 
-foo
+FIXME Write missing information
 
 === Execution-time Python procedures
 
-foo
+FIXME Write missing information
 
 // setup examples