fix docs error

doc/libmodal-lua.txt

@@ -127,8 +127,6 @@ FUNCTIONS                                    *libmodal-lua-ParseTable-functions*
 	Value: ~
 		13
 
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-FUNCTIONS                                    *libmodal-lua-ParseTable-functions*
 
 `ParseTable`.stringSplit({str}, {regex})   *libmodal-lua-ParseTable.stringSplit()*
 
@@ -585,8 +583,6 @@ FUNCTIONS                                       *libmodal-lua-globals-functions*
 	Value: ~
 		1
 
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-FUNCTIONS                                       *libmodal-lua-globals-functions*
 
 `globals`.is_false({val})                        *libmodal-lua-globals.is_false()*
 
@@ -806,7 +802,7 @@ FUNCTIONS                                           *libmodal-lua-Layer-function
 	See also: ~
 		|libmodal-lua-Layer.exit()|  How to enter the `Layer`.
 
-`self`:map({mode}, {lhs}, {rhs}, {options})           *libmodal-lua-Layer.enter()*
+`self`:map({mode}, {lhs}, {rhs}, {options})           *libmodal-lua-Layer.map()*
 
 	Add a mapping to the `Layer`.
 
@@ -1043,8 +1039,6 @@ FUNCTIONS                                          *libmodal-lua-Mode-functions*
 		|libmodal-lua-ParseTable|  For information about how to use this
 		                         variable.
 
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-FUNCTIONS                                          *libmodal-lua-Mode-functions*
 
 `self`:enter()                                         *libmodal-lua-Mode.enter()*