Made a few changes to improve readability

 * Removed time related words
 * Split a sentence to improve readability

Author: Kaartic Sivaraam

book/07-git-tools/sections/searching.asc

@@ -111,8 +111,9 @@ If you need to be more specific, you can provide a regular expression to search
 ===== Line Log Search
 
 Another fairly advanced log search that is insanely useful is the line history search.
-This is a fairly recent addition and not very well known, but it can be really helpful.
-It is called with the `-L` option to `git log` and will show you the history of a function or line of code in your codebase.
+This can be really helpful.
+It is called with the `-L` option to `git log`.
+It will show you the history of a function or line of code in your codebase.
 
 For example, if we wanted to see every change made to the function `git_deflate_bound` in the `zlib.c` file, we could run `git log -L :git_deflate_bound:zlib.c`.
 This will try to figure out what the bounds of that function are and then look through the history and show us every change that was made to the function as a series of patches back to when the function was first created.