rename of entries fields to get only singular field names

entries/torcs_the_open_racing_car_simulator.md

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 # TORCS, The Open Racing Car Simulator
 
 - Home: http://torcs.sourceforge.net/, https://sourceforge.net/projects/torcs/, https://packages.debian.org/search?keywords=torcs
-- Inspirations: RARS
+- Inspiration: RARS
 - State: mature, inactive since 2016
 - Download: http://torcs.sourceforge.net/index.php?name=Sections&op=viewarticle&artid=3, https://sourceforge.net/projects/torcs/files/
 - Platform: Windows, Linux
-- Keywords: simulation, open content, racing
+- Keyword: simulation, open content, racing
 - Code repository: https://git.code.sf.net/p/torcs/code, https://gitlab.com/osgames/torcs.git @add
 - Code language: C++
 - Code license: GPL-2.0
-- Code dependencies: GLUT
+- Code dependency: GLUT
 - Assets license: FAL
 
 Car racing simulation.