Fix typo in "Platform Tuple Definition" section id (#1926)

docs/2_5_fmu_distribution.adoc

@@ -89,7 +89,7 @@ The header files `fmi3PlatformTypes.h`, `fmi3FunctionTypes.h` and `fmi3Functions
 A binary FMU must contain the binary files - that are needed at linking or loading time - of the FMU for all supported platforms in this folder.
 To use the binaries of a specific platform, all items in that platform-specific binary folder must be unpacked at the same location as the binary `<modelIdentifier>.{dll|dylib|so}`.
 
-====== Platform Tuple Definition [[platform-tupe-definition]]
+====== Platform Tuple Definition [[platform-tuple-definition]]
 
 The names of the binary directories are standardized by the "platform tuple".
 Further names can be introduced by vendors.