CompareSpdxDocs: Fix a comment typo in "file"
CompareSpdxDocs: Fix a comment typo in "file"

sschuberth/spdx-tools,yevster/tools,yevster/tools,yevster/tools,yevster/tools,sschuberth/spdx-tools,yevster/tools,sschuberth/spdx-tools,rtgdk/tools,rtgdk/tools,sschuberth/spdx-tools,sschuberth/spdx-tools,rtgdk/tools