DOC: assorted typo fixes in the documentation and Makefile

This is another round of cleanups in various docs and comments in the
Makefile.

(cherry picked from commit 2a950d02a951715447d4068ec6689a842d452aaa)
Signed-off-by: Willy Tarreau <w@1wt.eu>
(cherry picked from commit 99ac71d7fff3cc11d70fb2de2758daf69cd85e42)
[wt: drop changes not for 2.0]
Signed-off-by: Willy Tarreau <w@1wt.eu>
diff --git a/doc/coding-style.txt b/doc/coding-style.txt
index 9f1bd79..24550f1 100644
--- a/doc/coding-style.txt
+++ b/doc/coding-style.txt
@@ -111,7 +111,7 @@
   | [-Tabs-][-Tabs-]ctx->del = len;
   | [-Tabs-]}
 
-It is worth noting that some editors tend to confuse indentations and aligment.
+It is worth noting that some editors tend to confuse indentations and alignment.
 Emacs is notoriously known for this brokenness, and is responsible for almost
 all of the alignment mess. The reason is that Emacs only counts spaces, tries
 to fill as many as possible with tabs and completes with spaces. Once you know
@@ -1218,7 +1218,7 @@
 
 Right use of comments :
 
-  | /* This function returns the positoin of the highest bit set in the lowest
+  | /* This function returns the position of the highest bit set in the lowest
   |  * byte of <x>, between 0 and 7. It only works if <x> is non-null. It uses
   |  * a 32-bit value as a lookup table to return one of 4 values for the
   |  * highest 16 possible 4-bit values.