doc: remove unnecessary markup

contrib/sb-md5/md5.lisp

@@ -270,7 +270,7 @@ where a is the intended low-order byte and d the high-order byte."
 
 (deftype md5-regs ()
   "The working state of the MD5 algorithm, which contains the 4 32-bit
-registers `\\\\A`, `\\\\B`, `\\\\C` and `\\\\D`."
+registers A, B, C and D."
   `(ub32-vector 4))
 
 (defmacro md5-regs-a (regs)
@@ -286,13 +286,13 @@ registers `\\\\A`, `\\\\B`, `\\\\C` and `\\\\D`."
   `(ub32-aref ,regs 3))
 
 (defconstant +md5-magic-a+ (assemble-ub32 #x01 #x23 #x45 #x67)
-  "Initial value of Register `\\\\A` of the MD5 working state.")
+  "Initial value of Register A of the MD5 working state.")
 (defconstant +md5-magic-b+ (assemble-ub32 #x89 #xab #xcd #xef)
-  "Initial value of Register `\\\\B` of the MD5 working state.")
+  "Initial value of Register B of the MD5 working state.")
 (defconstant +md5-magic-c+ (assemble-ub32 #xfe #xdc #xba #x98)
-  "Initial value of Register `\\\\C` of the MD5 working state.")
+  "Initial value of Register C of the MD5 working state.")
 (defconstant +md5-magic-d+ (assemble-ub32 #x76 #x54 #x32 #x10)
-  "Initial value of Register `\\\\D` of the MD5 working state.")
+  "Initial value of Register D of the MD5 working state.")
 
 (declaim (inline initial-md5-regs))
 (defun initial-md5-regs ()
@@ -314,8 +314,8 @@ registers `\\\\A`, `\\\\B`, `\\\\C` and `\\\\D`."
 
 (defun update-md5-block (regs block)
   "This is the core part of the MD5 algorithm.  It takes a complete 16
-word block of input, and updates the working state in `\\\\A`,
-`\\\\B`, `\\\\C`, and `\\\\D` accordingly."
+word block of input, and updates the working state in registers A,
+B, C, and D accordingly."
   (declare (type md5-regs regs)
            (type md5-block block)
            (optimize (speed 3) (safety 0) (space 0) (debug 0) #+lw-int32 (float 0)))

doc/manual/beyond-ansi.texinfo

@@ -664,7 +664,7 @@ For structures:
 
 @item @code{slot-value} and @code{slot-boundp} function as expected, including (for
   @code{slot-value}) calling and respecting the return value of
-  @code{slot-unbound} if the slot is unbound;
+  @code{slot-unbound} if the slot is unbound; 
 
 @item @code{(setf slot-value)} functions as expected, including performing
   type checks to verify that the new value is of an appropriate type

doc/manual/compiler.texinfo

@@ -393,7 +393,7 @@ Note that @code{do} appears in the processing path. This is because
 @cindex macroexpansion
 @cindex source transform
 The rest of the processing path results from the macroexpansion of
-@code{do}:
+@code{do}: 
 
 @example
 (block nil

src/code/misc-aliens.lisp

@@ -97,7 +97,7 @@ mechanism.")
 
 (define-alien-routine ("os_set_errno" set-errno) void (new-errno int))
 (setf (documentation 'set-errno 'function)
-      "Set the \\C library pseudo-variable named `\\errno` for obscure syscalls.")
+      "Set the C library pseudo-variable named `\\errno` for obscure syscalls.")
 
 ;;; Decode errno into a string.
 #-win32