replace trailing whitespace with blackslash in README.md

As an alternative to the markdown trailing whitespace as a line
break, we use a trailing blackslash as a markdown line break.

2000/tomx/README.md

@@ -1,10 +1,10 @@
 # Most Complete Program
 
-Thomas P John  
-Mishybi Plamoottil  
-Parottukonam  
-Nalanchira P.O, Trivandrum-695015  
-India  
+Thomas P John\
+Mishybi Plamoottil\
+Parottukonam\
+Nalanchira P.O, Trivandrum-695015\
+India\
 <https://web.archive.org/web/20010720192926/http://tomx.tripod.com/>
 
 ## To build:
@@ -90,8 +90,8 @@ the `main()`, leaving the complexities of the C file elsewhere and making this
 source still acceptable to `make` and `sh`. The following modification to the
 last few lines will compile the IOCCC's famous [mkentry.c](mkentry.c).
 
-    .PHONY: /* true clean */ 
-    #undef   true 
+    .PHONY: /* true clean */\
+    #undef   true\
     #include "mkentry.c"
 
 Ain't that useful?