fix FastTextWikiNewsTermSimilarityMixin #234

Job	Run time
🔍 Python code format (3.8)	4m 26s
🏗️ Docker image	9m 13s
🔍 Python code format (3.9)	4m 9s
🧪 Python integration tests (3.8, pyserini)	5m 5s
🧪 Python integration tests (3.8, pyterrier)	5m 10s
🧪 Python integration tests (3.9, pyserini)	5m 27s
🔍 Python Lint (3.8)	4m 28s
🧪 Python integration tests (3.9, pyterrier)	5m 5s
🔍 Python Lint backend (3.8, pyserini)	4m 48s
🔍 Python Lint (3.9)	4m 31s
🔍 Python Lint backend (3.8, pyterrier)	4m 45s
🔍 Python Lint backend (3.9, pyserini)	5m 3s
🔍 Python Lint backend (3.9, pyterrier)	4m 38s
🧪 Python unit tests (3.8)	6m 19s
🏗️ Python wheel (3.8)	22s
🧪 Python unit tests (3.9)	6m 30s
🏗️ Python wheel (3.9)	14s
🚀 Publish Docker image	0s
🚀 Create GitHub release	0s
🚀 Publish Python wheels	0s
	1h 20m 13s

Provide feedback