Update DESIGN.md

DESIGN.md

@@ -137,7 +137,7 @@ hasn't been found, the next file, if there is one, will be read in and the chunk
 files were packed into a big tar file which is then split into chunks.
 
 The *content* field of a file indicates the indexes of starting and ending chunks and the corresponding offsets. For
-instance, *fiel1* starts at chunk 0 offset 0 while ends at chunk 2 offset 6108, immediately followed by *file2*.
+instance, *file1* starts at chunk 0 offset 0 while ends at chunk 2 offset 6108, immediately followed by *file2*.
 
 The backup procedure can run in one of two modes. In the default quick mode, only modified or new files are scanned. Chunks only
 referenced by old files that have been modified are removed from the chunk sequence, and then chunks referenced by new 
@@ -210,6 +210,6 @@ Chunk content is encrypted by AES-GCM, with an encryption key that is the HMAC-S
 
 The snapshot is encrypted by AES-GCM too, using an encrypt key that is the HMAC-SHA256 of the file path with the *File Key* as the secret key.
 
-There four random keys are saved in a file named 'config' in the file storage, encrypted with a master key derived from the PBKDF2 function on
+These four random keys are saved in a file named 'config' in the file storage, encrypted with a master key derived from the PBKDF2 function on
 the storage password chosen by the user.
 

README.md

@@ -1,6 +1,6 @@
 # Duplicacy: A new generation cloud backup tool
 
-Duplicacy is a new generation cross-platform cloud backup tool based on the idea of [Lock-Free Dedeuplication]([design document](https://github.com/gilbertchen/duplicacy-beta/blob/master/DESIGN.md)).  Duplicacy is the only backup tool capable of cross-computer deduplication which allows multiple computers to back up to the same storage simultaneously without using any locks (thus readily amenable to various cloud storage services).
+Duplicacy is a new generation cross-platform cloud backup tool based on the idea of [Lock-Free Deduplication](https://github.com/gilbertchen/duplicacy-beta/blob/master/DESIGN.md).  It is the only clould backup tool that allows multiple computers to back up to the same storage simultaneously without using any locks (thus readily amenable to various cloud storage services).
 
 The repository hosts design documents as well as binary releases of the command line version.  There is also a Duplicacy GUI frontend built for Windows and Mac OS X downloadable from https://duplicacy.com.  The source code of the command line version is available to the commerical users of the Duplicacy GUI version upon request.