Some Spelling, Grammatical Errors, and Invalid Dataset Link

[ParthaPratimBanik]

Have to fix the following mistakes in README.md

• [x] Spelling
• [x] Grammatical
• [x] Repeated words

Have to update the following dataset link:

• [x] DRIVE
• [x] LIDC-IDRI
• [x] Belarus TB dataset
• [x] DDSM
• [x] SCR Database
• [x] VISCERAL
• [x] Coding4Cancer
• [x] Parkinson Speech Dataset with Multiple Types of Sound Recordings Data Set
• [x] Parkinson's Disease Classification Data Set

Have to update the following paper link:

• [x] Learning Low-Dimensional Representations of Medical Concept

Including the following dataset link:

• [x] SCMR Consensus, Sunnybrook Cardiac Data