docs: fix invalid reference formatting for infomap #1820

Job	Run time
Build wheels on Linux (i686)	19m 40s
Build wheels on Linux (x86_64)	24m 37s
Build wheels on Linux (aarch64/manylinux)	16m 22s
Build wheels on Linux (aarch64/musllinux)	7m 7s
Build wheels on macOS (arm64)	7m 35s
Build wheels on macOS (x86_64)	19m 14s
Build wheels for WebAssembly	6m 50s
Build sdist and test extra dependencies	2m 47s
Build with sanitizers for debugging purposes	2m 24s
Build wheels on Windows (Win32)	13m 11s
Build wheels on Windows (ARM64)	15m 34s
Build wheels on Windows (x64)	30m 26s
	2h 45m 47s

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