FunctionMetadata.py: Fix a typo
FunctionMetadata.py: Fix a typo

Closes https://github.com/coala/coala/issues/5132

karansingh1559/coala,coala/coala,SanketDG/coala,SanketDG/coala,jayvdb/coala,Nosferatul/coala,Nosferatul/coala,jayvdb/coala,Nosferatul/coala,karansingh1559/coala,jayvdb/coala,coala-analyzer/coala,coala-analyzer/coala,coala-analyzer/coala,coala/coala,karansingh1559/coala,SanketDG/coala,coala/coala