Fix a typo in component doc string
Fix a typo in component doc string

I found a typo while reading the code, so correct it.

Change-Id: I7fcae6eb380c30886788faddffd66fcee7e0d595

devdattakulkarni/test-solum,gilbertpilz/solum,gilbertpilz/solum,gilbertpilz/solum,ed-/solum,ed-/solum,stackforge/solum,julienvey/solum,gilbertpilz/solum,stackforge/solum,devdattakulkarni/test-solum,julienvey/solum,mohitsethi/solum,openstack/solum,mohitsethi/solum,ed-/solum,ed-/solum,openstack/solum