fixes typos

Author: Luis Hernandez

Diff for: README.md

@@ -74,22 +74,22 @@ Complete the following tasks:
 
 A `project` is what needs to be done. We want to store the following data about a `project`:
 
-- [ ] a unique Id.
+- [ ] a unique ID.
 - [ ] a name. This column is required.
 - [ ] a description.
 - [ ] a boolean that indicates if the project has been completed. This column cannot be NULL, the default value should be `false`.
 
 A `resource` is anything needed to complete a project, some examples are: a person, a tool, a meeting room or a software license. We want to store the following data about a `resource`:
 
-- [ ] a unique Id.
+- [ ] a unique ID.
 - [ ] a name. This column is required.
 - [ ] a description.
 
 The database should not allow resources with duplicate names.
 
-An `task` one of the steps needed to complete the project. We want to store the following data about an `task`.
+A `task` one of the steps needed to complete the project. We want to store the following data about an `task`.
 
-- [ ] a unique id.
+- [ ] a unique ID.
 - [ ] a description of what needs to be done. This column is required.
 - [ ] a notes column to add additional information.
 - [ ] a boolean that indicates if the task has been completed. This column cannot be NULL, the default value should be `false`.