Documentation, comments and code formatting improvements

Small documentation corrections.

Improve comments in codes, spelling corrections, comment formatting

Wrap long source code lines so there are fewer lines over 80 columns and very few over 120 columns

NO changes to actual source or interface
diff --git a/test/UsefulBuf_Tests.c b/test/UsefulBuf_Tests.c
index f53693a..d8ccbac 100644
--- a/test/UsefulBuf_Tests.c
+++ b/test/UsefulBuf_Tests.c
@@ -1,6 +1,6 @@
 /*==============================================================================
  Copyright (c) 2016-2018, The Linux Foundation.
- Copyright (c) 2018-2019, Laurence Lundblade.
+ Copyright (c) 2018-2020, Laurence Lundblade.
  All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
@@ -28,7 +28,7 @@
 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- ==============================================================================*/
+ =============================================================================*/
 
 #include "UsefulBuf.h"
 
@@ -79,7 +79,8 @@
    UsefulBufC UBC2 = {"unbounce ", 9};
    UsefulOutBuf_InsertUsefulBuf(&UOB, UBC2, 10);
 
-   // Make it a null terminated string (because all the appends and inserts above not strcpy !)
+   // Make it a null terminated string (because all the appends and
+   // inserts above not strcpy !)
    UsefulOutBuf_AppendByte(&UOB, '\0');
 
 
@@ -160,7 +161,8 @@
    - around MAX size_t
 
 
- Test these for the buffer size and the cursor, the insert amount, the append amount and the insert position
+ Test these for the buffer size and the cursor, the insert amount, the
+ append amount and the insert position
 
  */