book: “non-linear” should be “non-constant” (changkun#241)

meisterluk · web-flow · commit 4dfd34e8a003 · 2022-07-12T08:40:48.000+02:00
There is no notion of linearity in this book. However, the context
makes it clear that non-constant values are meant.
diff --git a/book/en-us/03-runtime.md b/book/en-us/03-runtime.md
@@ -374,7 +374,7 @@ int main() {
 }
 ```
 
-The first question, why not allow non-linear references to bind to non-lvalues?
+The first question, why not allow non-constant references to bind to non-lvalues?
 This is because there is a logic error in this approach:
 
 ```cpp

Original file line number	Diff line number	Diff line change
`@@ -374,7 +374,7 @@ int main() {`
`374`	`374`	`}`
`375`	`375`	```
`376`	`376`
`377`		`-The first question, why not allow non-linear references to bind to non-lvalues?`
	`377`	`+The first question, why not allow non-constant references to bind to non-lvalues?`
`378`	`378`	`This is because there is a logic error in this approach:`
`379`	`379`
`380`	`380`	```cpp