Fix a few small typo's.

README.markdown

@@ -143,7 +143,7 @@ runnable from Commodore BASIC 2.0 and stores uninitialized data at `$C000`.
 
 In addition, various checks are not attempted (such as tracking the usage
 of an indirect indexed table) and other checks may be subverted (for example
-by `locate`ing two variables with two different types of storage at the same
+by `assign`ing two variables with two different types of storage at the same
 address.)
 
 In summary, SixtyPical helps you write a very-nearly-assembly-level program

doc/Analyzing.markdown

@@ -1,4 +1,4 @@
-Anayzling SixtyPical Programs
+Analyzing SixtyPical Programs
 =============================
 
     -> Tests for functionality "Analyze SixtyPical program"

doc/Checking.markdown

@@ -145,7 +145,7 @@ byte tables, one table of low bytes and one table of high bytes.
     | }
     = True
 
-An address may be declared with `locate`, which is like `.alias` in an
+An address may be declared with `assign`, which is like `.alias` in an
 assembler, with the understanding that the value will be treated "like an
 address."  This is generally an address into the operating system or hardware
 (e.g. kernal routine, I/O port, etc.)

doc/Instruction_Support.markdown

@@ -18,7 +18,7 @@ A `X` indicates unsupported.
 
 Funny syntax indicates use of a special form.
 
-In these, `absolute` must be a `reserve`d or `locate`d address.
+In these, `absolute` must be a `reserve`d or `assign`d address.
 `immediate` must be a literal decimal or hexadecimal number
 (or in future, a declared constant.)