Fix some typos.

ChangeLog

@@ -197,7 +197,7 @@ Changes in 1.2.5.2 (17 Dec 2011)
 - Add a transparent write mode to gzopen() when 'T' is in the mode
 - Update python link in zlib man page
 - Get inffixed.h and MAKEFIXED result to match
-- Add a ./config --solo option to make zlib subset with no libary use
+- Add a ./config --solo option to make zlib subset with no library use
 - Add undocumented inflateResetKeep() function for CAB file decoding
 - Add --cover option to ./configure for gcc coverage testing
 - Add #define ZLIB_CONST option to use const in the z_stream interface
@@ -1270,7 +1270,7 @@ Changes in 1.0.1 (20 May 96) [1.0 skipped to avoid confusion]
 - fix array overlay in deflate.c which sometimes caused bad compressed data
 - fix inflate bug with empty stored block
 - fix MSDOS medium model which was broken in 0.99
-- fix deflateParams() which could generated bad compressed data.
+- fix deflateParams() which could generate bad compressed data.
 - Bytef is define'd instead of typedef'ed (work around Borland bug)
 - added an INDEX file
 - new makefiles for DJGPP (Makefile.dj2), 32-bit Borland (Makefile.b32),