Update README.md

Author: jeffwright13

README.md

@@ -69,7 +69,7 @@ The `--slow` option generates each speech snippet is a slow-spoken style.
 
 The `--tld` option allows the user to select one of several regional 'accents' (English only). For accents, select one from the following list: ["com.au", "co.uk", "com", "ca", "co.in", "ie", "co.za"]
 
-Selecting `--book-mode' allows creating a spoken-word program (with or without background soundfile). It does this by reading in a file that does not have inter-phrase durations inserted, as is normally the case. This feature is new and needs some tweaking. For now, just make sure your input file is pure text, and experiement with using a single line (with many sentences) as one paragraph vs. multiple lines, one per sentence. You wil notice a difference in how the 'speaker' pauses between phrases.
+Specifying option `--book-mode` creates a spoken-word program (with or without background soundfile). It does this by reading in a file that does not have inter-phrase durations inserted, as is normally the case. This feature is new and needs some tweaking. For now, just make sure your input file is pure text, and experiement with using a single line (with many sentences) as one paragraph vs. multiple lines, one per sentence. You wil notice a difference in how the 'speaker' pauses between phrases.
 
 The CLI prints out a progress bar as the phrase file is converted into speech snippets. No progress bar is shown for the secondary mix step. There may be a significant delay in going from the end of the first stage (snippet generation) to the end of the second stage (mixing), primarily because of reading in the .wav file, which may be large. For this reason, you may want to select a sound file for mixing that is small (suggested <20MB). Otherwise, be prepared to wait. The progress bar may be disabled with the `--no-progress-bar` option.