corrected some pages

Several small corrections were done to several proofs and definitions.

Author: JoramSoch

I/ToC.md

@@ -483,7 +483,7 @@ title: "Table of Contents"
    &emsp;&ensp; 3.2.24. **[Kullback-Leibler divergence](/P/norm-kl)** <br>
    &emsp;&ensp; 3.2.25. **[Maximum entropy distribution](/P/norm-maxent)** <br>
    &emsp;&ensp; 3.2.26. **[Linear combination of independent normals](/P/norm-lincomb)** <br>
-   &emsp;&ensp; 3.2.27. **[Normal and uncorrelated does not imply independent](/P/norm-indcorr)** <br>
+   &emsp;&ensp; 3.2.27. **[Normal and uncorrelated does not imply independent](/P/norm-corrind)** <br>
 
    <p id="t-distribution"></p>
    3.3. t-distribution <br>

P/norm-corrind.md

@@ -47,7 +47,7 @@ p(V=0)  = p(V=1)  = \frac{1}{2}
 p(W=-1) = p(W=+1) = \frac{1}{2} \; .
 $$
 
-Moreover, let $X$ follow a [standard normal distribution](/D/snorm) and let $Y$ be defined as a transformation of $X$ and $W$:
+Moreover, let $X$ follow a [standard normal distribution](/D/snorm) and let $Y$ be defined as a combination of $X$ and $W$:
 
 $$ \label{eq:X-Y}
 \begin{split}

P/norm-lincomb.md

@@ -11,7 +11,7 @@ title: "Linear combination of independent normal random variables"
 chapter: "Probability Distributions"
 section: "Univariate continuous distributions"
 topic: "Normal distribution"
-theorem: "Linear combination"
+theorem: "Linear combination of independent normals"
 
 sources: