fix receive spelling error
fix receive spelling error

Prior to this commit several of the examples in the message expectation
documentation had the method as `should_recieve` when the proper
spelling is `should_receive`. This commit fixes those documentation
errors.

zephyr-dev/rspec-mocks,rspec/rspec-mocks,rwz/rspec-mocks,edwardpark/rspec-mocks,h4ck3rm1k3/rspec-mocks,thoughtbot/rspec-mocks,zephyr-dev/rspec-mocks,telekomatrix/rspec-mocks,AEgan/rspec-mocks,maclover7/rspec-mocks,ducthanh/rspec-mocks,maclover7/rspec-mocks,ducthanh/rspec-mocks,AEgan/rspec-mocks,samphippen/rspec-mocks,rwz/rspec-mocks,thoughtbot/rspec-mocks,h4ck3rm1k3/rspec-mocks,samphippen/rspec-mocks,edwardpark/rspec-mocks,telekomatrix/rspec-mocks,rspec/rspec-mocks