Add software name to figure captions

Author: rcvalle

src/doc/rustc/src/exploit-mitigations.md

@@ -255,8 +255,8 @@ referred to as “stack probes” or “stack probing”.
 The Rust compiler supports stack clashing protection via stack probing, and
 enables it by default since version 1.20.0 (2017-08-31)[26]–[29].
 
-![Screenshot listing cross references to __rust_probestack in hello-rust.](images/image1.png "Cross references to __rust_probestack in hello-rust.")
-Fig. 6. Cross references to `__rust_probestack` in hello-rust.
+![Screenshot of IDA Pro listing cross references to __rust_probestack in hello-rust.](images/image1.png "Cross references to __rust_probestack in hello-rust.")
+Fig. 6. IDA Pro listing cross references to `__rust_probestack` in hello-rust.
 
 ```rust
 fn hello() {
@@ -270,8 +270,8 @@ fn main() {
 ```
 Fig 7. Modified hello-rust.
 
-![Screenshot listing cross references to __rust_probestack in modified hello-rust.](images/image2.png "Cross references to __rust_probestack in modified hello-rust.")
-Fig. 8. Cross references to `__rust_probestack` in modified hello-rust.
+![Screenshot of IDA Pro listing cross references to __rust_probestack in modified hello-rust.](images/image2.png "Cross references to __rust_probestack in modified hello-rust.")
+Fig. 8. IDA Pro listing cross references to `__rust_probestack` in modified hello-rust.
 
 To check if stack clashing protection is enabled for a given binary, search
 for cross references to `__rust_probestack`. The `__rust_probestack` is
@@ -413,8 +413,8 @@ The Rust compiler does not support stack smashing protection. However, more
 comprehensive alternatives to stack smashing protection exist, such as
 shadow and safe stack (see Backward-edge control flow protection).
 
-![Screenshot listing cross references to __stack_chk_fail in hello-rust.](images/image3.png "Cross references to __stack_chk_fail in hello-rust.")
-Fig. 14. Cross references to `__stack_chk_fail` in hello-rust.
+![Screenshot of IDA Pro listing cross references to __stack_chk_fail in hello-rust.](images/image3.png "Cross references to __stack_chk_fail in hello-rust.")
+Fig. 14. IDA Pro listing cross references to `__stack_chk_fail` in hello-rust.
 
 To check if stack smashing protection is enabled for a given binary, search
 for cross references to `__stack_chk_fail`. The only cross references to